ASA Illegal/Non-approved bat approved by umpire

[NCASAUmp]

Hey, guys,

This was brought up on another forum. Let's say that during the pre-game equipment inspection, the umpire looks at a Freak Plus and approves it for that game. Two innings later, a batter steps into the box, hits the ball, and reaches 1B. Before the next pitch, the DC brings it to the attention of the umpire that a non-approved bat was used.

Do you call the out, eject the runner and return runners? Or do you let play stand and toss the bat?

Either way, I suspect an @$$-chewing is in order, and rightfully so. Question is: who gets to do the chewing? OC or DC (later followed by UIC)?