Just got an email from Glass support asking me to provide info for a Glass swap. Looks like the XE 16.1 really did brick Glass for some users. Maybe they forgot to provide DFU functionality (or want a more user-friendly fix)?
They are offering a chance to change your Glass color on the swap and also offering your choice of accessory for the trouble.
I think we'd all prefer to simply not have had this issue in the first place, but I thank the team for finding a way to fix the problem quickly instead of leaving us hanging around for weeks.