How do you know he was arbitrage betting? Which two books did he play against each other? Many people, including myself, search for the best line. Even if I can arb it doesn't mean that I'm doing this. Winnings should always be paid.
edit- I just took a look at the player's bets in scam accusations. He wasn't arbitrage betting. The player bets small and no one arbs for that small of an amount.
Are you sure they did not place on a different outcome in different casinos? If they place bets in another casino on a different outcome and both casinos use the same odds provider, that is arbitrage betting. How do you know they were not doing arbitrage betting? However, I do not see a moderator tag on your profile, so you do not meet the criteria.
Xyes.com offered to share their investigation result with the moderators or the administration. They might share it with reputable forum members as well. Try sending them a private message and see if they consider you a reputable member.
you got zero clue about arb and still trying your best to accuse me. whats the catch?