Batter Interference?

[w_sohl]

Like to think I got this right today. I think some wording in a case play supports this even though the sitch isn't the same.

R1, two outs

pitch comes in (ball/strike not relevant) and R1 takes off for second, catcher begins to pull ball from glove to throw down to second and get the runner when the batters follow through carries the bat into the catchers glove hindering his ability to pull the ballout and throw down. I immediately rule batter interference and call the batter out to end the half inning. Coaches go nuts, I tell him the follow through is his responsibility and he disagrees, game goes on, they win 4-3 anyway.