If I'm understanding, you've got the injector lines disconnected and are ready to set the head off, and are wondering if the injectors need to come out first. If I'm right, then the answer is no, the injectors will come off with the head. That said, once the head is off, it's really easy to set it down wrong, or for any one of a million other things to happen, and mess up the tip of one or more of the injectors. In other words yes, they will come out, but you'd be much better off taking the injectors out of the head, and marking them for their respective cylinder (unless your having them done too) just to be on the same side.