Stalled!

I did a hole shot in my 1 legger Sunday morning with my 3.00 gears, 351W and AOD . I was turning to the right as I was doing it. Somewhere near the completion, she stalled out and had problems starting her for about 3-4 minutes. What happened?
And then as she was rolling around, she was grinding in the rear area possibly my drum brakes? I was power braking to up the RMP's until I released. Any ideas? Thanks!