B Can Go Down

Spoiler: Tricks Used

Autopilot. (You'll definitely use it more than once.)
Low ceiling (It does have an effect to the autopilot. Use it wisely.)
Offset block (A block that's one half block away from its original position can make B go down.)

Spoiler: Video Solution

The way B fell down with the ball it felt like a ghost.
My gameplay was different. I used R only for one ball. But yours is cleaner and smooth. Thanks for sharing.

...
tiny level
with pack of acrobatic smart moves.

Several variations possible. Quick fun. Managed an accidental stack going for the ball on the stone half cylinder.

...
when B pushed top ball using claustrophobia,
B program say he must turn back to grass,
then it cause B doing a mid air jump
from ball.
very cool...

Nice B fall...Thanks for sharing @P_simorf

Same mechanism as yesterday but this time it wasn't stable. B needed about 10 runs to fall and knock the ball. The 2nd time, B landed on the ball that was on the wedge to the win. The next time, after about 10 more runs, B landed on the wedge. See pic. Too bad the level wasn't stable.

Spoiler: Pic

@Meko Guy, to knock the ball on the wedge, use

Spoiler

Autopilot/low ceiling combination

So B can go down to the water safely, you'll also need

Spoiler

autopilot

Great with B fall move.

Awesome level.
Cool combination of 2 tricks.
I accidentally gone on the stair beside Stone Half Pillar, and stucked

It was little unstable.
But I won it successfully.

Enjoy performing the tricks involved.