It sure sounds like the security was already watching you, but I'm a little confused. You claim you were, "Accused of removing security devices from $103 worth of DVD's and placing them into a purse before leaving the premises".....so DID you steal the DVD's or not?
It also sounds like you did in fact resist the security for them to respond as they did. If you did resist (and I think you did) you got what anybody gets when you fight back. If the question of assault charges was brought up, then there must have been a reason. If you feel the need to become a booster, don't wear designer coats and carry Louis Vuitton. Some of the thieves I've caught were smaller than I but gave me more trouble than a big person, so size doesn't mean a lot. It also doesn't matter if you refused to sign the trespass notice, it's still in effect. If you didn't make a statement, that's OK, it'll all come out in court. Trust me on this, if you were charged with theft and assault, it's not going away you both will be going to court. For security, it's not easy when dealing with every type of personality under the sun. Drunks, tweekers and hypes are unpredictable as they come....then add a little adrenalin to the mix, you're lucky you didn't get beat down hard, some security are like that.

