I just tried the LastPass account. I didn't expect to be able to log in, but I was able to using the original credentials!
And LastPass didn't log the IP that reverted the master password. It's so weird.
07/12/2012 22:17:04
LastPass.com
67.188.9.35
Master Password Changed
07/17/2012 08:30:52
LastPass.com
0.0.0.0
Master Password Reverted