I am glad you are free. But PLEASE talk to the union and sit down right now and document everything that happen! I would not sue or anything but protect your good name as best as you can.
I worked in a very bulling school for several years... the bully was my principal. It was like living in the times of Hitler or Cuba (of course on a much smaller scale) it really was hard. She was transferred this year... now my work is a much happier place
So I do understand