The Imam misses Fajr prayer and argues with them about money issues
Question

                Our Imam in the Masjid acts and Behaves in a bad way and I would like to know the ruling on this please.He went against the introduction of new syllabus in madrassa as the masjid did not produce an hafiz in its 30 year history. Also allegation that he is doing sihr on the secretary as he is making the changes.Also the Imam fails numerous times on Fajr prayers, uses phone during Madrassa lessons. Also this imam has been dismissed from three other masjids for bad behaviour and also arguing about money issues. Please advice on the correct ruling. is sit right to pray behind for all, the secretary and should be he dismissed? Are the masjid commitee committing a sin by keeping him?.
Praise be to Allah.It is important to choose 
    as the imam one who is known for righteousness, decency and keenness to 
    benefit the people, because the post of imam is a noble post and the one who 
    does this task is acting in the stead of the Prophets, caliphs and scholars. 
    The Prophet (blessings and peace of Allaah be upon him) said: “The people 
    should be led by the one who has most knowledge of the Book of Allaah. If 
    they are equal in knowledge of Qur’aan, then by the one who has most 
    knowledge of the Sunnah. If they are equal in knowledge of the Sunnah, then 
    by the one who migrated first. If they are equal in terms of migration, then 
    by the one who entered Islam first”
Narrated by Muslim (673). 
So the Prophet (blessings 
    and peace of Allaah be upon him) chose for the position of imam the best and 
    most perfect. 
If the imam has the 
    shortcomings or faults that you have mentioned, then he should not have been 
    appointed as an Imam in the first place and he should be dismissed from the 
    post so long as that will not lead to greater mischief. 
Abu Dawood (481) narrated 
    that a man led some people in prayer and spat in the direction of the qiblah 
    whilst the Messenger of Allaah (blessings and peace of Allaah be upon him) 
    was looking on. When he had finished, the Messenger of Allaah (blessings and 
    peace of Allaah be upon him) said: “He should not lead you in prayer.” After 
    that, he wanted to lead them in prayer but they stopped him and told him 
    what the Messenger of Allaah (blessings and peace of Allaah be upon him) 
    hadsaid. He mentioned that to the Messenger of Allaah (blessings and peace 
    of Allaah be upon him) and he said “Yes”, and I (the narrator) think he 
    said: “You offended Allaah and His Messenger.”
the hadeeth was classed as 
    hasan by al-Albaani in Saheeh Abi Dawood. 
Shaykh al-Islam Ibn 
    Taymiyah (may Allaah have mercy on him) said: the imams are agreed that it 
    is makrooh to pray behind an evildoer, but they differed as to whether (such 
    a prayer) is valid. It was said that it is not valid, as was the view of 
    Maalik and Ahmad in one of the two reports narrated from them. And it was 
    said that it is valid, as was the view of Abu Haneefah and al-Shaafa’i, and 
    the other view narrated from (Ahmad and Maalik). But they did not differ 
    concerning the fact that it is not appropriate to appoint him (as an imam). 
    End quote from Majmoo’ al-Fataawa (23/358). 
Shaykh Ibn Baaz (may Allaah 
    have mercy on him) said: If it is possible not to appoint one who commits 
    evil openly as an imam, then one must avoid that. But if someone else 
    appoints him and he cannot dismiss him from this post of imam or it is not 
    possible to dismiss him from the post of imam except by means of an evil 
    that will cause greater harm than the harm of the evil that he commits 
    openly, then it is not permissible to ward off a lesser evil by means of a 
    greater evil or to ward off a lesser harm by means of a greater harm. Islam 
    came to achieve and complete interests and to ward off and reduce evil as 
    much as possible. End quote from Majmoo’ Fataawa al-Shaykh Ibn Baaz 
    (9/377). 
With regard to prayer 
    offered behind him, it is valid even if he is an evildoer, according to the 
    more correct of the two scholarly opinions. See the answer to question 
    number 13465. 
But if what is said about 
    him is proven, that he does witchcraft, then in this case it is not 
    permissible to make him an imam or to pray behind him. 
To sum up: advice should be 
    offered to such a person first of all, and he should be reminded that he is 
    an example for others and that things may be regarded as bad on his part 
    that are not regarded as such on the part of others, and that he has to 
    avoid all causes of suspicion, and strive to do his work and fulfil the 
    trust that has been given to him. 
The committee that is in 
    charge of the mosque has to dismiss him from the post of imam so long as 
    they are able to do that, and appoint someone who is more suited to this 
    post than him, and is less likely to come under suspicion and is more likely 
    to bring people together. 
May Allaah help us all to 
    do that which He loves and which pleases Him. 
And Allaah knows best.