on pacific a lot of the times unregistration isin't possible because they have no tdollar system
What a lot of people do (including myself) if you have money in your account to cover the buy in, if you see youre going to be shipping a satty quickly register for the tourney youre sattying into with your own money. Once the satty ends and you ship the ticket, itll say it can't register you because you're already registered and it will credit your account with the buy in for that tourney. Then you can just unreg from the tourney since you bought in with your own money, and instead of getting any tdollars or what not its basically as if you won real money off the satty