Continuity mistake: After Pinkman opens the bags filled with money he throws his gun along the floor. When it stops it points in a 3 o'clock position. When the angle changes it points in a 1 o'clock position. (00:41:00)
Continuity mistake: In Season 4 we see Mike gets shot in the ear and and has a flap of flesh hanging off. In this episode, there are no marks or deformities on his ear.
Chosen answer: I'm not sure how far you are into the show but he does eventually come up with a way to launder it (wont spoil it for you but rest assured, when he gets a lawyer the show gets much better!) and in the final season he also comes up with a way to give his children his money without the cops or the DA knowing it came from him.
The_Iceman