enemy troop stuck/jammed at castle orinoko

[gerokee]

Hey

I can't attack one of the four troops you have to kill to liberate castle orinoko, since he's stuck/jammed against a tree. He doesn't move, doesn't react to my presence and i can't get close enought to attack him.
The crossed swords do show up.
Any ideas how to get out of that situation? Is there a reset of troop locations?

Thanks for any suggestion
gerokee