Yes, it's done with intent, not by pushing under them.
I find myself telling my kohai a lot these days, "Dig up my feet." They get locked in some force-on-force interaction and I tell them, "Dig up my feet." They get this confused look and then make some overt movement, and I say, "No, no. With your mind. Dig up my feet." And then they do and I fall over.
Weird stuff.