The fact they say it expires in "Int32.MaxValue" days is worrisome. But hey those stale licenses, we gotta fuck those guys up...
Yeah that sucks. I wish you luck with that and will keep my eyes peeled for issues here. We gave 50 seats so trouble like this would be nice to avoid.
It would seem that if you have a partner license your royally screwed.
http://www.itwriting.com/blog/8075-visual-studio-license-exp...
Edit: I just span up a copy fo the virtual machine snapshot and it didn't say anything even though that had been technically not used and has no network connection.