And in the case of the first two neither of them were planned and certainly highlighted in Haley's eye how little control she really had over him.
I don't think so, she seems to have a plan, and a fairly pragmatic one at that. Belkar, being Belkar, could be a dangerous variable. Sure, he probably would happily kill the thieves. Afterwards? Chaotic evil, unpredictable Belkar in evil city with no MoJ or Roy to control him?But now she's just being stupid. She should have him healed ASAP, even if it was just to prod him towards the front line as a makeshift meatshield. (Belkar, with his proven singleminded destructiveness, would probably not even notice, much less mind, it.)
At the very least he's safe where he is.