Let's assume the poker dealer is working a scam with one of the players, "Sam." On this particular hand, the scam is falling apart. Maybe Sam didn't pick up on a signal, or he has gotten out of sync with the plan.
The dealer sees the tragedy coming down the pike, and as a last ditch effort he spoils the whole game to prevent an even larger loss from occurring after the river card.
For example, on this particular hand, maybe the cards were preloaded into the deal to actually harm Sam. This was done deliberately because we need to keep some volatility across hands to make the cheating more subtle. So, on this hand, Sam is supposed to bet a little bit early, then fold. He loses some of his money, but the whole game seems on the up-and-up.
Except, oh no!, Sam appears to think this is one of the planned winning rounds, so he just keeps betting! Sam has made an error, and may lose big. I (the dealer) am going to suck it up and pretend to make a mistake. I'll get yelled at in public, but the bosses will thank me later for rescuing Sam.
The dealer sees the tragedy coming down the pike, and as a last ditch effort he spoils the whole game to prevent an even larger loss from occurring after the river card.
For example, on this particular hand, maybe the cards were preloaded into the deal to actually harm Sam. This was done deliberately because we need to keep some volatility across hands to make the cheating more subtle. So, on this hand, Sam is supposed to bet a little bit early, then fold. He loses some of his money, but the whole game seems on the up-and-up.
Except, oh no!, Sam appears to think this is one of the planned winning rounds, so he just keeps betting! Sam has made an error, and may lose big. I (the dealer) am going to suck it up and pretend to make a mistake. I'll get yelled at in public, but the bosses will thank me later for rescuing Sam.