There is no stalemate rule in 9 ball, only 8-ball. And in 8-ball it's tough to figure it out without a ref to call it unless both players are good enough to see a no-win situation. For example the 8-ball almost in the pocket with another ball right on top of it, that would cause a stalemate.
The shot as shown is not hard, just shoot the 9 though the point. It will compress and ball goes in.
What happens here?
(9ball): two balls are locked up part way up in the tight pocket opening. They are wedged solid. The 'next ball in rotation' will not go, nor the adjoining ball, regardless of how hard hit.
Could this be a stalemate situation?
Hope so. We played it that way, and reracked.

