I saw that escape from a Full Nelson in one of Bas' older instructional sets. What he doesn't do in that clip is the full falling slam that follows the leg scoop. If you notice at the end of doing that bit he says "I broke someone's rib doing this." I don't doubt it. When he puts the move on his training partner in the videos I've got, his training partner can't move and they cut the tape.
It doesn't matter if you agree or disagree
... As long as I don't bore you and I spark a moment of thought, my goal is achieved
Queng leon queng tigre ecu tacacut, queca pa? - Pampangan Mandarigma Motto