This is one of those deals. if a book is going to boot a player for winning then they should cash him out on the spot.
Of course we all know GCS has a monday morning window of opportunity to make a withdraw. The player called at the right time to make a withdraw and was then told he was getting booted. Fine, except he was then told he would have to call back next week to arrange a payout. Not Fine.
To GCS's credit, they did an about face and agreed to send the player his funds. I believe Mike the head guy down there stepped in and reversed a lower level decision.