I'm sure being from SSH you were just having fun / trying to fit into the scene / not screwing around..
But.. really you shouldn't be doing this ****. Everyone there went through a day of prep, probably had tips for how to stay safe / what to do if you fall, etc.. Most importantly, they all signed away to do it and that any injuries are not at the fault of the production.. If people are sneaking into set, aside from the possibility of literally ruining shots.. And undermining the jobs of everyone who is trying to keep people out.. People on the production could get fired.
There was that video posted yesterday that nobody seemed to notice with some ******* in green who snuck in and slunks around in the middle of the fight.. Seriously, that stuff is lame as hell. If he is in any shots they want it will cost hundreds/thousands to digitally remove him. The production probably stepped up their security more because of people like him.. but in general, you're not part of the production, it's not cool to pretend you are.