I thought straight away the screen shots were a bit fishy but its not something you can come out and say without proof. (maybe you could put a link to the real screenshot?) He/she was quick enough to boast about a big win but surely you would lose £1000s at some point playing with stakes like that? Yet we don't hear about that part.
With everyone else's screen shots I genuinely feel happy for them because you see from their posts they go through the highs and the lows everyday and don't just come onto the forum to boast.