Tires can't be thrown away (legally), so odds are very high that your Michelins are still there awaiting their next "worn tire pick up service" collection visit . . . .
I'd go back and find them, if they're not too far away.
Please take some additional photographs for this thread as well, if possible. It's all about data . . .
FYI: it looks like Michelin is taking this issue seriously. They've had a local field engineer examine one of our Plaids at a local Tesla Service Center (alignment was spot on) and he's generated a report for Michelin HQ AFAIK. Sadly, my case is subtle: inside edges are still intact, BUT we are losing about 1 to 1.5 psi per week on both rear tires, with no visible source, despite dunk tank test. At least they have another data point, but it's the tires that have come apart that are likely the best case studies, along with their Plaids . . . .