Can anybody make any sense of this?
I thought at first that this was a remote wipe issued by the ActiveSync server at my work, which apparently happens after 3 failed login, however the ActiveSync log files at work show no unusual activity. I also wondered if it could be some sort of malfunction of the wipe out feature from samsungdive.com, but neither of these things go as far as to wipe the SD card or to overwrite the internal memory with junk files. I also ran a Kaspersky Mobile Security scan but that found nothing untowards.
I've abandoned any hope of recovering my files, but I'm just intrigued to know what happened.