Just to give Aodhan's rationalization, he believes (being in a seemingly restored temple of Sarenrae) that Keeland is being contacted by a higher power. Tsadok, although so far doing nothing to harm them, was coincidentally in the very place they were sent to clear out. He'd be a bit leery about that happenstance, after all he follows Lonrach, god of trickery & chaos. Now this individual is in the way of Keeland's vision so he's decided to remove the obstacle from the path with a non-lethal maneuver. Normally I'd just see he pushes Tsadok, but I think this is the best mechanical option in Pathfinder.