Yes, there is an added sleeve around the can. On the tire side there has been significant rubbing, which has now gone through this patch. It appears to be riveted and high temp siliconed on.
I tried pulling the baffle with vise grips after tearing up the rubber gloves I was wearing. There is some additional metal gauze-type material at the end.
Should I just start digging out that old stuff? All the videos I've watch show the whole thing just sliding out easily.