Seriously??!!! What kind of Christian "takes a vote " as to whether or not someone else is a Christian?? Only God can judge someone's heart! I wouldn't concern myself with that person's opinion what so ever!
All I really know to do when mania causes me to have some "regrettable behavior" is to explain to anyone who was offended/affected by or witnessed it, that it was due to my condition, was not intentional, apologize (if necessary) and try my best to forgive myself.
I hope that you will find some way to fight those intrusive thoughts by finding and focusing on the good and positive things about yourself!