I just saw this

[just another ref]

Originally Posted by Snaqwells

Interesting. I would have never called it that way. Seems like a stupid interp to me, but ok. BTW, they need to update that case play in light of 9-2-10 penalty 4.

But it's a question of who did the touching, I think. If the defender reaches out and touches the thrower, intentional foul. It is specified in the case play, that the thrower lost his balance and leaned over to touch the defender. Basically, the touch kept him from accidentally touching the floor, which is also a violation. (9.2.5A)

So, if this touch, for the purpose of this rule, gives the thrower "inbounds status"
I don't see why the thrower contacting a teammate, with the ball, or directly, would not be a violation as well.