Aggression during breeding season???

I've been pairing my snakes for about 3 weeks now, 3 days on/3 days off.
Well today when I was removing my male back to his tub, he was extreemly aggressive. I haven't had him long, and he's always been kind of aggressive but today I was actually scared of him..lol
Is it normal behavior due to breeding season or is he just an ass?

I don't know about snakes specifically, but I know a lot of other animals (including people) can get rather aggressive during breeding...especially since they have the mentality that they have to fight for the right to mate. I think that makes them especially weary of being taken away from the female.
Not sure about snakes, though. I'm sure in a minute someone more knowledgeable will reply. :)

All of mine have been big ole piss ants. I guess it's cuz none of them have done the deed yet ( I would be mad too) haha