If he has to go back that's gotta be a shitty situation for him. The trust between he, his coach and front office is destroyed, the players on the team are at odds and prolly dont respect him plus he's out $8 million. The sixers definitely not gonna trade him on his terms they're gonna keep him as long as they can and drag their feet.
If he plays poorly it only reflects on him, if he tries to be a nuisance other teams may interpret that as someone who's hard to work with. Damn man I'm rooting for Ben cuz I've seen that shit before with companies and their employees. Dayum.