That's a point i can't believe again. Who in their right mind would sell a forum account including wallet that maybe contains 10 bitcoins for 1 or 2 bitcoins? It's pathetic to believe that this could have happened. So stupid can nobody be. Especially not an escrow who is trained to sniff out potential scams.
No, beyond possible.
How can you not believe that people are that stupid? People overpay for coins on purse.io and others think that the super big discounts are legitimate. People buy miners for an amount of money that could buy more btc on the market than the miners could ever hope to mine before becoming obsolete. People think they can outsmart everyone in the entire section of the forum dedicated to ponzi schemes. There is a 92 page thread in the gambling section debating the merits of something that you learn doesn't work in the first day of statistics class. there are people who think that moving a miner across a warehouse and changing the address that the coins go to counts as shipping a product.
You can find someone stupider than someone who thinks they aren't a scammer or are somehow legitimate by selling those escrow coins to someone else to steal instead of stealing them himself on the 1st page of every subsection of this forum.
The errors you describe are mostly done by newbies. They never heard of rising difficulty, only that there are magic money machines that print money. And so on. But master-p was an escrow for a long time. He wouldn't have survived when he would be so stupid that he could be easily scammed. He would have learned to identify the possible risks. Because of that i can't imagine that he sold the account without knowing very well what will happen.
In fact i doubt he sold at all. I tend to believe the recent problems with "reindexing" the blockchain on his wallet might be in fact a loss of his wallet and he had no backup. No the easiest way out might have been this story.
Well this is completely an idea to make sense out of this only. He scammed regardless of how you look at it.