So I ran my campaign with friends again last night. I explained that we were going to try and un-level after each troll. I ran into two different bugs(?) last night.

1) After a character levels and the GM 'un-levels' them, the character still retain stat points to spend. This was extremely demoralizing for players and tedious to me. They weren't allowed to spend their free points and/or I had to subtract the stats the had already applied.

2) A mob that dies and is resurrected ( either in game or in preparation ) does not give experience when being defeated. This actually gives me a way to cancel the trolls experience given. However, I still believe this may be a bug and wanted to report it.

For now I'll be using the 2nd listed issue to do a manual leveling system.