Sabotage in PP

 I continue to make progress. A strange thing that happened one night when I was quite concerned about my lack of air, (in my lungs) when doing my PP. I found that my relaxed place, instead of being vivid colours was all greyed out.  Not worried because I still got to my PP but found it interesting.  Have you ever heard of anyone experiencing this? ((Sandy's comment (look at this link and 446, 447, and 448) - http://calm.com.au/success-stories/445))