Ciao Ci : Use you head a bit : if you are really a controller in Milano ACC you know that you cannot work this job (ATC in an ACC) alone, it is Team work. If a Team does not like you , you cannot make it further,you know that if you've been trough OJT. Now imagine a whole OPS room against you. How long do you think you'll last ? Then thinking of coming back if it does not work ? I don't know about your union in Italy , but it it was in my unit they'd say : you wanted out ?, you'll stay out.
Also ATC in Europe is a very small world full of elephants. An Elephants have good memories.