Yes!! In my head the horse fell in love first and constantly sought each other out which was how Stede and Jeffrey met

fucked up mind that means he isn't responsible. also if he waited for Izzy to lose his leg then maybe he thought that would have pushed Izzy far enough to shoot Edward instead and he was either very delusional or just didn't understand how devoted and loyal Izzy was

would amputate it and then he could give Izzy the gun to kill himself with, if he went down there before and told him to kill himself for no reason other than Ed 'wants' him to then he'd be completely responsible but if Izzy lost his leg first then Izzy would want to die and therefore in Ed's