This is the first game you've ever GMed? Wow, I've tried GMing a few times and none of them went anywhere. I don't know if I'm just not cut out for it or what... :\ I suppose I should try with a PbP game, I'd have more time to prepare ideas and whatnot.
Personally I would have been really agrivated if I were Big's player, but I can't help playing goody two shoes types, so my version of Big definitelly would have lowered his axe. 'Cutscene' posts that make a PC watch as bad, irreversible things happen always bother me. However, I can understand your reasoning for doing it that way.
If you need ever need an alt I'd be interesded to try this... I'd probably be a sort of good character, who would try to ease the suffering of those around him. Course he'd probably frequently get frustrated with his impotence.