Two starts, no finishes

Saturday Rhonda felt like sleeping in so I headed to RMR by myself. I almost called her after doing a warmup lap to have her run my MTB over, I just had this feeling that I might need it but I decided not to bother her. One lap in I hit a bad part of the last downhill whoop-de-doo, launched off the lip and landed dead on my rear wheel. Burp, tubeless tire blown, wheel way out of true, no backup anything, race over.

Repaired my bike and headed to Wheeler Sunday AM. First lap tried to make a wide pass on a corner into a cement pad. Caught the edge of the pad square on my read wheel. Burp, lost about half my pressure (in all fairness had I been tubed it would have been a pinch flat). I rode three more laps on real low pressure but finally with 2 laps to go the bead buckled on a sharp corner and I lost most of the rest of my air. For some reason I never even considered stopping in the pit the 5-6 times I went past it to top off the tire until Ken mentioned it to me after I withdrew. I guess I just don't yet have the fix your bike in the middle of the race mindset. Next step will be to try a Stans'd tube in the rear and see how that goes. Cross is fun but this is getting frustrating.