Once, when I was much younger, I had a side gig dealing poker at an underground club in NYC. One morning at the end of 10 hours dealing, I accidentally exposed a burn card which turned out to be something one of the players was representing (bluffing), with about $10k on the table. It was an honest mistake - literally a fat finger mistake. I was tired and my dexterity slipped. The player jumped up, upset the chips and started shouting that I was cheating and in league with his opponent.
The manager came over to calm things down. He was the young son of a mob boss, whose portfolio encompassed a variety of entertainment franchises. In order to calm the player, he pulled me off the table, told me he believed it was an honest mistake, and then threatened my life if it ever happen again. I quit then and there. Only after I had quit and refused to come back do I think he actually knew for certain that I wasn't pulling a scam.
[edit] I'm really enjoying that people are enjoying this post, but I want to clarify what I was getting at: The original article assumes that SBF et. al. concluded by some internal mechanism that this was an "honest mistake", and that this is sufficient. That assumption belies the way criminal organizations actually work, which is to say, they wouldn't assume it was an honest mistake, but they'd happily say it was one and let off a patsy if they had orchestrated it. I kind of hope I can tilt the conversation toward this aspect of the OP's revelation?