[tcblue13]

I am assuming that instructions to close the gates are ground rules which cannot supercede playing rules but can be enforced by umpires. So, in the scenario described it is the normal dead ball and awards.

I would think that the PU would could and should let the coaches know at the plate conference that if this is not done and it affects the playing of the game, the coach of that team will be restricted to the bench for the duration. Although, if I saw the offense's gate open and knew that was the rule, I would throw the ball away intentionally.

Cite a rule?
The coach's code of ethics