Re: Chain plate or impact.
I saw no images that indicated a major imminent collapse or disjointed chain plate.
I'm perhaps operating under an abundance of caution, but I always handle safety issues that way.
I have no training in thermal image reading (and I didn't stay at a Holiday Inn Express), but I do have a minor bit of metallurgic training including NDI from my days as a USAF Metals Processing Specialist in my early 20's. I think by the time a thermal image would show a break I'd be picking up mast pieces.
With encapsulated plates it's not like a weak spot can develop and part of the plate pull upwards, the entire surface area of the plate is essentially glued to the hull.
The good, and confusing news is that other than gel coat cracking - there is no sign of movement or delamination.
Obviously I'm continuing to educate myself on this.
Lessons learned are opportunities earned.