Thanks guys, seems a squirt of PB blaster disolved the primer material so it just scooped out of the cup with a small screw driver. I then froze the whole mess and then wrapped the tube in a HOT towel as I applied steady heavy force to a rod. ( Just incase there were two primers in there) It came out. To be honest, I think the Lee has a better primer system once it's tweeked.
Guess I should get some spare tubes and/or just sell the press off. Lost 1/2 a snow day of relading due to this hic-up.