Bike won't start

I just found the torx 55 that I needed. The question is, is it possible to remove the head without taking down the engine from the frame?? I've been struggling for the past hour. I removed the 8 inner torx, the four on the sides screwed to the frame and the two small torx next to the chain tensioner. I have some movement and a little separation but cannot take it out.

Cheers!!!