Use the projectile from a fully submerged Evir to boost Samus into the sandfall, providing just enough height to make the first and hardest jump. Time the projectile to hit Samus when at the maximum height from a jump. The hit must be on the right side of Samus and with no inputs held, but also hold forward during the damage knockback to move through the sandfall. Getting a good jump while on the right side of the next floating block can get Samus to the leftmost block. With a clean jump off of the sand, Samus can then get onto the final vertical pillar.