I’ve seen a lot of people crank up their gas grill after they take the meat off to burn off the remainder of whatever was cooking. I did the same thing for many years too. But after I got my Weber Genesis, I found out straight from Weber that this is a bad idea. Very high temps are fine if you really need to cook something that way, but doing it every single time you cook puts a lot of extra wear and tear on the grill. There shouldn’t be any need to burn anything off if you have good grill grates.
So give your grill a rest. Maybe you want to brush it while it’s hot but otherwise, just let it cool down while you eat and then scrape it off.