Hi Thorazar.
This is something that happens to everyone at one time or another. I remember one time we were camping, and I was laying on the very hard floor. I awoke to see through the tent out at a raccoon that seemed to be sitting in front of me, on the other side of the barrier. I realized what was happening, and tried to separate go go out of it. Nothing, nada. I tried every exit tech I could think of, but nothing happened. I got as far as sitting up but my butt was firmly attached to my body/the ground. I was so mad when I finally snappped out of it and could see the tent around me. There had been a raccoon outside, he opened and raided one of the coolers we had outside. . I thought the 'sticking' was prob. caused by the discomfort in my back, and later I saw in one of Robert's books that blockages or discomfort can cause this- so I second Susan's advice and suggest practicing tactile awareness work (aka NEW). Might help.