I talked to them for a half hour...they called Penson to confirm that this was the case. They said that the transfer agent called the clearing firms to ask them to stop trading from taking place. If the case is that Choicetrade is allowing trades but TF is not, then my case for being mad gets even more strong.
Seems to me the TA is trying to save their own hide from the short shares (~1.5 billion).
someone here said be very careful if brokerages start restricting trading on this stock. Heck though they restricted trading on cshd at 1.50 and it went to 4.00