Stam, the difference would be that it usually stays in the server forever, rendering it a Ksiva that is Kayama.
Smart, I wouldn’t jump on the bandwagon accusing people of wild stuff on someone else’s say-so. Especially since we should know by now not to do that.
One more question: Are you talking about two posts by the same screenname or two different screennames that you are sure belong to one person? An accusation of Chilul Shabbos is no light matter. Don’t base it on piecy evidence. You are actually Mechuyav to try to imagine different scenarios to explain the strange phenomenon.
So far I really don’t believe that there is Chilul Shabbos going on here. I just hope it gets straightened out before it gets even more crooked.