[JJ]

NCAA. R3. Suicide squeeze attempt. R3 is off with the pitch; batter bunts at the ball and misses. The batter sees that R3 will be easily thrown out as R3 retreats toward 3rd base, so he (apparently) steps out of the box to position himself in front of the catcher so the catcher will have a harder time throwing to 3rd base.
The PU says, "Interference". The catcher gets off the throw anyway, and the defense gets R3 in a rundown and ultimately tags him out.

One out or two? Who is out? When should the play have been killed?

JJ