They always show less respect for the guys that need WWE more than WWE needs them. This is a pretty well established Vince personality quirk going back decades, which explains in part why guys like Sid and Warrior got chance after chance, or why there are so many stories of Vince changing his mind on someone after they take a stand against him. Kurt had been talking for years about wanting to be back in WWE, so it only makes sense in Vince logic that once he got back he'd be treated like shyt.