The 1st attempt, B needed to do a ToA to get back around after dropping the 2nd last ball. On my next attempt, I slid the mechanisms slowly until B could get the 2nd last ball and still get back without the ToA. I didn't see the squat drop move in your trick list - the 1st move to get B out on the stone pillar.
@gmacpro yupp... Thanks 4 aware me about missing of squat drop.. bcz i forgot that in hurryLater i edited the tricks list Spoiler: Thanks 4 P'C&R @gmacpro @ridgerunner @delator77 @GFJ And @Źàiď