Once you break the three way tie you go back to head to head. It is always the first tie-breaker. So if and I mean if Ensworth is out because of least number of wins then BA would be 2nd and MBA 3rd based on head to head.
From TSSAA handbook
For the purpose of district/region standings, the following tie-breaking procedures shall be applied and all regular
season games, both district/region and non-district/non-region, shall count. If at any point when the following tiebreaking
procedures are applied, one team has beaten all the other teams that are tied for a play-off position, that
team shall be rated above the others. After any position in the district/region standings has been determined, the
tie-breaker procedure shall begin all over again to determine the next position. This procedure shall be repeated
to determine all places in the district/region.