Mindbend procs a stun when it lands a hit. So my pet has to eat a few hits through the fight to get that stun to work.
There's that little gap between recycling the other stuns that mindbend has to pick up. I've run into some mobs that can nearly kill my pet in one hit.
And regardless, it'd still be a nice alternative to the maxed out line of +DPS. More uses than just soloing.