The Gers are facing a hefty bill from Falkirk for the damage a flare caused to their artificial pitch at the end of their Scottish Cup-tie on Saturday.
McCoist is concerned about the damage the incident has caused to the reputation of Rangers and also fears for the safety of supporters.
McCoist said: "Our supporters have been nothing short of sensational over the past two years or so. But we don't want incidents like that. The damage to the surface is bad enough. It is also very dangerous. I'm sure I am speaking for everyone within our club when I say that we need that to be cut out right away."
McCoist added: "The fans have done far more good than anything else, but we don't want to let ourselves down in that department. These things can give you horrific injuries.
"I don't think it's a lot to ask that people can be guaranteed they are in a safe environment when they go watch football."