How can evil doers be 'reborn' as 'human'? In the Pali suttas, SN 56.102-113  state those that realise the Four Noble Truth will be 'reborn in the human state' (manussesu paccājāyanti). The same message is found in SN 56.47 &amp; SN 56.48, which also state the human state (manussattaṃ) is very rare. 

As for the law of kamma, the message that unwholesome actions lead to pain &amp; wholesome actions lead to pleasure is found in countless suttas, namely:


  'These beings — who were endowed with bad conduct of body, speech &amp; mind, who reviled noble ones, held wrong views and undertook actions
  under the influence of wrong views — with the break-up of the body,
  after death, have re-appeared in the plane of deprivation, the bad
  destination, the lower realms, in hell. But these beings — who were
  endowed with good conduct of body, speech, &amp; mind, who did not revile
  noble ones, who held right views and undertook actions under the
  influence of right views — with the break-up of the body, after death,
  have re-appeared in the good destinations, in the heavenly world.'


However, a sutta named the Cula-Kammavibhanga Sutta claims evil-doers can be 'reborn' in the human state, as follows:


  There is the case, student, where a woman or man is a killer of living beings, brutal, bloody-handed, given to killing &amp; slaying,
  showing no mercy to living beings. Through having adopted &amp; carried
  out such actions, on the break-up of the body, after death, he/she
  reappears in the plane of deprivation, the bad destination, the lower
  realms, hell. If, on the break-up of the body, after death — instead
  of reappearing in the plane of deprivation, the bad destination, the
  lower realms, hell — he/she comes to the human state, then he/she is
  short-lived wherever reborn. This is the way leading to a short life:
  to be a killer of living beings, brutal, bloody-handed, given to
  killing &amp; slaying, showing no mercy to living beings.


How can this be? How can one single sutta (Cula-Kammavibhanga Sutta) override the doctrine or law found in all of the suttas that a brutal bloody-handed killer of living beings will experience a state beset by suffering? Surely, a killer than feels no pain from killing &amp; murdering is a psychopath.
might be lost in translation somehow.   from this 


  "No ce kāyassa bhedā paraṃ maraṇā apāyaṃ duggatiṃ vinipātaṃ nirayaṃ
  upapajjati, sace manussattaṃ ..


if replace "in stead of" with "if not" , that it makes more sense.  


  if not reappearing in the plane of deprivation, the bad destination,
  the lower realms, hell — he/she comes to the human state,....


It could also mean that when karma is exhausted in suffering plane, and being appear in human world after? So once you burn your "debt" you move to the next phase or rebirth, lacking the "debt"  

The vice versa is said to occur at the end of a rebirth in the heavens as a god. They burn through their "good debt" quickly and tend to fall into the lower realms when their dues are paid. 

I am an amateur self taught Pali.  I could be wrong but at least it opens up for those who know more about Pali to chime in.  Could "No ce" together with rest of a sentence,  is better to translate to "if not" rather than "instead of"?