Having spent a fair bit of time in this very type of environment (no jokes please) I would suggest that arguing the case, based on the fact that any other such glass is more likely to injure both the individual and others.
What you will find though, in my experience, is that once the individual is unable to cause damage to the wired glass / replacement glass, they will direct their attention to something else, usually the fire extinguishers.
As you already have a good standard of AFd and if you are able to demonstrate a sound evacuation policy then I see little issue. However, the problem with the evacuation policy can often be that in this type of premise, the occupancy type has a general stubbiness to evacuate. If you can provide evidence that he is a danger to others then I would suggest having this individual removed to another more suitable premise this may be your answer, possibly secure or semi secure. After all, this is not a fire safety issue, this is a case of violent behaviour that is putting others life at risk should a fire occur.
Not a straight forward resolution, although I guess in this instance you need the FSO to be reasonable, especially given your efforts already.