Hazard Pay - S5-E3
Other mistake: Jesse and his girlfriend and Brock are all apparently playing the video game, but when they show the TV it's only split screen so only 2 are really playing.
Other mistake: There is no P-trap beneath the red sink in the Madrigal offices.
Answer: Saul is a criminal himself. It's not past his capabilities to forge some documents to show the 857k is available.
Ssiscool ★
Forged documents by Saul is most likely the correct answer.
The_Iceman