The "blind" wrestler was Junk Yard Dog and the heel was Michael "PS" Hayes, it happened in Mid-south at a LA venue in the 80's. JYD had been "blinded" with Freebird hair cream at a previous event and was sitting ringside with sunglasses and cane when Hayes (who was having a match) came toward him threateningly. A fan jumped the railing saying "don't worry Dog, I got him!" and drew a gun on Hayes, putting JYD in a tight spot. Fortunately security saved him from having to either break kayfabe or let Hayes get shot.I’ve been watching a lot of old Nitros and yes he would have definitely done that in 96 and would have gotten a just as bad if not worse beat down for doing it.
I remember hearing a work story turned into a shoot in the 70s when I fan jumped the rails with a gun to protect wrestler who was “blind” because of a previous heel attack. The story was funny and put the baby face in a weird spot but the situation was defused quickly.