YES, that's a problem I've been having. I was wondering if it had to do with my trying to exploit the spell. I'd resurrect a monster, run away, and come back to find him hostile and no longer in resurrected form (he would look normal and drop exp and treasure all over again). Around that time period was when I made that uber sword with 10 charms, though...
So yes, when I res a monster it attacks me. Quite annoying, as it means I wasted a point on the skill.