I unfortunately have dealt with an ahole like this too.
I ended up departing the hold till he was fired and returned back to holding fix.

He was the demeaning Jekyl/Mr Hyde type.
You could make a decision one day and be praised...next day/same decision and be ridiculed for it.
I "voiced" my displeasure and concerns and were met with total BS.

I always say karma will catch up to these guys.