I guess my fear is that, confronted with the choice of: I get money, and you don't; or we rethink our equity; he'll say "You know what? I think I'm ready to be working full time on this!", which doesn't repare the past two years, and to be honest, at this point I'm not even sure I want him full time on this, given his total lack of commitment. "Deciding" to go full time when given an ultimatum, is not enough for me.