They always come off a 10 day SEC suspension on the Grey Market.
The Major brokers will allow you to trade though some may require you to call the order in. I know that TDAmeritrade will allow online trading of these stocks after trading resumes and they are moved to the Grey Market.
Most folks will get a chance to sell if there is some volume though not likely at a PPS they would like.
News 
Market Data 
Discover 
AI
