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Nice video. In the future, from safety standpoint, it would be better to abseil with your dive rig clipped to your harness hanging between/below your legs. It would have less affect on your center of gravity and less likely to cause one to lose control of the abseil.
It has been a while since I've done it, but shouldn't the harness biners be the other way? "Screw down so you don't screw up."