DOG under 5 seconds left

[BayStateRef]

I would ignore the deliberate effort to stop the clock and let time expire.

The case book makes it clear this is the correct thing to do:
interfering with the ball following a goal should be ignored if its only purpose is to stop the clock.

A T should be called "if the tactic in any way interferes with the thrower's efforts to make a throw-in."

The thrower (and his team) did not want to make a throw in. They wanted the clock to run out.

By calling the T, the defense (with no time outs remaining) benefits greatly. As happened here, even with the free throws being made, it was able to steal the ball and attempt a 3-point shot.

Let the defense grab the ball. Just don't blow the whistle. Let time expire.