Interference on pop up foul

[IRISHMAFIA]

Originally Posted by Insane Blue

ASA Rule Set
Bases loaded the runner on 3rd is off base on the pitch when the batter hits a pop up down 3rd base line which. The runner is attempting to get back to the base but interferes with the 3rd baseman going to the ball who was playing in front of the bag. The ball ultimately landed foul just beyond the base.

I ruled interference on the runner runner is out. What should have been done with the Batter?

I talked to my local DUIC but not so sure of his ruling which I will post later.

I'm sort of surprised no one has asked the position of the ball at the time of the INT. It would only matter if the batter-runner was not declared out on the play.