Glad you are ok! Being part of a fast group, I always worry about missing something at speed and having that exact same thing happen. We had a guy break his back in two places on a similar type gap and dead stop hit. No paralysis, but he quit the dunes not wanting a repeat.
Been wanting to get into another sand car since I sold my SU Sand Pro 2 mid engine 2 years ago. Have always loved the Alumicraft cars. Mission accomplished yesterday as I stumbled into the absolute perfect car for me. Nice light 2250 pound car with class 10 suspension components and doors so...
Have someone well versed in suspension geometry look at it for you. You probably would be adding bump steer unless your car was originally set up incorrectly.
To get the Mav R is $2900 membership and $1000 a month. It might be worth it if you were going to come in and spend 2 weeks at the dunes and then never go again. I wonder if the cars delivered to Glamis have paddles and enough lights for a night ride.