arm stuck after an almost-held ball

[HokiePaul]

I'm re-reading this and seeing the play differently than my first post (I was imagining B continue to hold onto the ball but get pulled into an awkward position of being pinned). That would be a held ball.

But if A pulled the ball free and B just has an arm stuck, I'm giving the players half a second to react. If B pulls the arm out and A lets him, then I have nothing. If B tries to pull his arm out and A keeps it pinned, then its a foul of A. And if B doesn't attempt to move his arm but instead causes illegal contact then I could see a foul on B.