This is no different than what Omni/Little Nasa did to me. They gave me three Bonus Plays. I played them all on big money lines. The first two lost, then I won the third one and they said I shouldn't have been able to bet a big dog, then they said I was "sharp" so I shouldn't of got them in the first place.
Case in point, a book can make up whatever garbage they want to try and justify their reason for not honoring a bet. If you book it, pay it. Don't accuse a player of this or that. For one, you have no proof. Secondly, even if he was using a "spider program" who cares. The match had to win for him to get paid. It won, show the man his money. Then you bring up the fact that they are in the same state. Big freaking deal. The state has 10 million people in it. What's your point on that issue.
Dave says he welcomes scalpers, etc. So the guy bets 1k at your place and 1k somewhere else, now he is out money.
You had the line at one price and moved it up. It tells me that you got action on the favorite and you are begging for action on the dog by moving it the way you did. So the players must read your mind. Every player should be a mindreader to avoid betting a bad line.
That is bs, and Casa should pay the man, and consider paying him extra for his troubles.