One of the things that has not been brought up is the state of mind of the police officers when they arrive. They are going to get a call something to the effect of there is a trespasser here, he's armed, he has a gun. Their ride over they may very well be getting pumped full of amped up with a mix of YEE HAW lets get the Bad Guy & Uh Oh is this the day I day. Than they get to meet you. My guess that gives you a good chance of having them draw their guns and laying you down eating dirt in front of all your co worker before getting hauled off to the jail house where they may sort it out and release you. No false arrest they responded to an armed and dangerous call. No false police report the corp reported armed trespasser. You are jobless and nothing you will say or do will erase your co workers image of you laying on the ground cuffed and being disarmed. Really really believe you need to contact a lawyer and as I said try changing the rule.