By the time I found the rule we are 6 pages into the thread so this has probably been covered
Rule 6.2d(2)
2) If the catcher is in the act of making a throw to retire a runner
and the batter is in the batter’s box and his normal follow-through
unintentionally strikes the catcher or the ball while the catcher is in
the act of throwing, “Time” is called and runners return (unless the
catcher’s initial throw retires the runner).
http://www.ncaa.org/library/rules/2008/2008_baseball_rules.pdf