Good point.
Thing is, and I don't know how well I wrote it, but he tried to escape, and Didge was sort of sensing a threat.
He didn't hurt the guy, just employed a pressure point. When the dude wakes up, he'll be no worse for wear except for a bruise on his shoulder.
Gotta love being a former secret agent.
And, DigiGeist has ways of enterrogating
without physical or mental harm. He has a way of loosening lips.