>>724618105
the main theory is rape because of different factors (he effortlessly knew how to drug someone to knock them out, anya wanted a lock on her door, etc.)
since this seems to be a point of debate i'll just point out that even jimmy admits that whatever happened will undeniably fuck everything up for both him and especially curly being that it was the captain's responsibility
through process of elimination we can at least say it wasn't stealing or killing (at that point in time) so that definitely narrows it down in the list of "things that can permanently fuck up your life and reputation forever"