Lower realms rising? recently i read an article about a troubled young man who was brought to attention by one of his friends to a temple.
Here is a brief description....

A young guy suddenly started acting really weird which was noticed by a good friend of him. This person was a regular guy and he suddenly developed an unnatural state of mind which his friends first assumed to be a typical porn addiction.
But his behavior soon became worse and he started being really indecent and started doing some perverse things like groping women on the bus and such.
He was accompanied by his friend when they traveled to &quot;Ruwan Weli Stupa&quot; (The monument with highest number of Lord Buddha's remains on earth) in hopes that some advice and worshiping the stupa would be sufficient to re-discipline him.
As he was worshiping he started acting weird and the friend asked for the help of monks. As Monks were chanting (In suspicion of the influence of a lower realm) he started talking in a rough voice.
The voice said....
I will not go away without taking him, he is like us.
I was passing by one day when i saw him looking at a picture box, he was by two humans in coitus (Porn) and i cling on to his body. I liked sex too, specially the taste of men. Now i only influence him he watch it and i get to feed.
After further questioning These were revealed....
We are building power among humans, it is easy now that they are seduced easily in the present. Food for us is not rare anymore.
Our kind cant know each other's gender until the season comes. When it comes they rip each other with claws to feed on each other. So we find satisfaction while clinging on to humans and letting them do our bidding.
We have captured the other parts of the world (this happened in Asia), almost all of those humans are born among us when they die. Soon we will establish our power here too (Asia)

This is not some article but a national newspaper published by a one of the most well respected monasteries.
What can we take as reference from the teaching to understand this &amp; What would be the proper cause of action other than precepts?
If the man was a monk, he would eventually be expelled from the monastic order. Similarly, if the man's mind has been consumed by pornography to the  point his behaviour is contrary to social norms, he should probably be forbidden from entering the temple. Often, people with addictions cannot be helped, until those people can recognise for themselves they have a serious problems. 

The four brahma vihara (metta, karuna, mudita, upeka) include equanimity when we wish to help someone but are unable to. 

In short, the monks who are responsible for the temple should probably telephone the police to remove the deranged man from temple. Buddhism does not have the power to save everyone.