[SAump]

Did the batter by carelessly releasing the bat and hitting the catcher initiate malicious contact?

If NO, why the ejection and not the warning?

If YES, then by RULE 3-3-n the proper call was made on the field.

PENALTY: The umpire shall eject the offender from the game. Failure to comply shall result in in the game being forfeited. In (n), the ejected player is declared OUT, unless he has already scored.
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I will now leave this thread UP for further comment from the general audience. Out of respect for my non-involvement, please no longer address me in any of your comments. My opinion has been stated and is well known. As I stated earlier, I NO LONGER agree with your interpretation of an accident that results in serious injury. The batter is responsible for his actions which includes safely releasing the bat. I am not ruling on a carelessly thrown bat. I am ruling on a bat that makes serious CONTACT with the catcher or UMPIRE (MALICIOUS). That B/R is OUT immediately and ejected for MC. The runner's are returned to bases at TOP unless it is the third OUT.
Best wishes and have a pleasant week.