they are giving customers the option of a snapshot, so its hard to say they have bad backup solutions, for all we know the snapshots are only a minute out. They are simply saying your current image may be corrupt. the only way you can fault them is that they didnt shut down the vms gracefully. given that it was a lightning strike they may not have been able to (they may have lost physical servers during the strike). Also, its probably not part of their protocol to shut down everything like that, they probably could have responded to a power outtage much more gracefully then a lightning strike, theres a big difference. most of the direct lightning strikes i have seem resulted and electric panels being toasted, many of them having the backup generators tied into.