I think all this would never have started if deposits were correctly credited during that time period. But around that time at least three users had that issue where deposits were not "confirmed" normally by satoshidice. (Maybe because of the "malleability attack" or the bug in satoshidice that was recently corrected as mentioned in this thread).

Now I'm slightly more inclined to believe that maybe samedamnbtc's account was compromised, but if his deposit had been confirmed normally for him when he made it (in his satoshidice account), then I think he wouldn't be blaming you now.