I've actually had this happen and he wasn't stuck on anything(didn't look like it at least). He would just stand there and not move no matter what I told him for at least a solid minute and then all of a sudden after clicking way out in the distance he decided to move again.
StarFreeze
I think that's intentional.
I've had more fun with this beta than released AoC levels 21-80.
For the Rook: 1. Sometimes when targetting Hammer Slam on an enemy in the distance and that targeted enemy dies a second later Rook will use Hammer Slam in front of himself. Note there were no other enemies or mines near him when he decides to do this. 2. Tower of light on Rook's shoulder shows damage to other Demigods but no other enemies, not sure if this is really a bug or not. 3. I think I may have noticed someone pointing this out before but couldn't find it again