I meant to post this earlier but forgot until just now.
We brought friends to the Phoenix airport today and on our return to Tucson I spotted the lid to a 22.5" WSM on the side of the freeway. Banged up pretty bad from what I could tell, but I'm sure the temp gauge, at the very least, was salvageable. The lid was not crushed but I think I could see a pretty big dent. I'm posting just as an FYI for you guys in the Phoenix area that may be feeling a bit adventurous.
Location was on the 202 just East of the 10 on right side of the road. Good luck.