Cardinals - Marlins game, batter interference.

[Illini_Ref]

I am an NFHS umpire, so I am not sure of the OBR rulings. Last night in the Cards - Marlins game, Chris Carpenter was batting, one out, bases loaded. He tried to bunt on a squeeze and missed. He then got between the catcher and the plate and the runner slid in safely. The umpire called batter interference, which I understand.

Then they called the batter out, disallowed the run, and put the runners back where they were. In FED, with less that two outs and the runner advancing to home, the runner is out, not the batter.

Was this ruling correct????