You will more than likely have to put the tablet in APX mode, then use NVFLASH and Wheelie to flash the un-BLOB'D stock rom. The stock rom will have the stock recovery and all partitions included. There is a thread on how to do this:
[GUIDE] nvFlash General Users Guide [Unbrick/Recover/Downgrade/Upgrade]- TF201 (this is the second time I've linked to this thread today... but it is such a good thread for the Prime!)
Just curious why you are flashing back? Is the CM11 rom not working out too well? I'm currently on Androwook, but was thinking about trying CM11.