I believe in second chance if a player really wants to improve himself and that is only possible by monitoring him after unban. Nobody is perfect here so its common that a player can break a rule or use hack intentionally or unintentionally but the thing that matters is that how well the staff cope with such situations.
For instance, hunting kept evading his ban so we did permanent ban on him cause he continued to break rules rather than accepting his mistake, same in the case of rk.binin, he too kept ban evading so Suri permanently banned him.
So similarly if these two guys did ban evade then they shall remain banned, i was unable to find that tho. But as Suri has requested them to post screenshot of their ban so lets wait until he investigates more in this case.