[just another ref]

I continue to wade thru the gargantuan study guide as I prepare for the test on Monday. Your tolerance for a couple more days is appreciated. Yes, I know something like this has been addressed before.

Thrower-in A1 reaches across the line and uses the ball to push B1 in the chest, displacing him in the process. Ruling: unsportsmanlike technical on A1

False

Is there a specific written reference to anything along these lines or do we just assume that the restrictions on contact (player shall not push.....etc.)
would apply to a push with the ball the same as a push with the bare hand.
Also, the fact that A1 is the thrower-in, thus legally out of bounds, is not significant in this play, is it?