He is definitely a sandbagger and I think we must report him. He regularly wins 2000 rated opponents by playing almsot perfect chess and at the same time he regularly loses from 800 rated opponents playing suicidal chess.
Here is one very clear example of suicidal chess:
Check how masterfully he blunders the bishop to enable checkmate and then he misses checkmate in 1 for 3 consecutive moves. This is a rapid , not a blitz or a bullet.
The same player plays almost perfect chess with not even one blunder against a 2000 opponent
He is clearly a sandbagger!
You can't post in the forums yet. Play some games!