You correctly moved out of the way to allow the gunman into the property where he thereafter turned his attention away from you.
I would suggest binding surrender via F1 so you can easily surrender if required.
This was on the fringe of breaking 3.4, had the gunman not turned his attention...
The rules clearly state what you did was wrong. I don't believe you had read the rules at all since your last ban, when you return please read over the rules.