I was pointing out the situation that if you dismiss the physio and the other team's physio refuses to cover, you have a problem if a player requires treatment from the dismissed physio. What do you do? Go and ask the dismissed physio to come back and treat his player?
If the physio gives you abuse, warn him over his conduct and tell him he will be reported for misconduct. If he continues, then it's another misconduct, if he still continues then abandon. If two warnings and two misconduct reports don't stop him and the other team officials can't control him, you've enough evidence to support an abandonment.
Furthermore, if you dismiss a physio and the other physio refuses to treat the opposition players, shouldn't you abandon there and then? What's your provision to treat injured players in that situation?
I've simply said in this thread that you can't dismiss the physio and explained why I believe you shouldn't. Even you have stated earlier in the thread that you don't think you can dismiss the physio.