Episode Six - S1-E6
Visible crew/equipment: When the lawyer goes to leave, after discussing the life insurance policies with Catherine Martell, a boom pole is visible moving in the window reflection behind Catherine. (00:29:03)
Episode Six - S1-E6
Visible crew/equipment: When Hank steals the lighter at the diner, his and Shelly's previous tape marks are visible on the floor behind him. (00:17:40)
Episode Six - S1-E6
Visible crew/equipment: At the start of the episode, when Deputy Andy enters the police station, at least two crew members are reflected in the glass doors. (00:03:44)
Answer: The answer to pretty much any question beginning with "Has David Lynch ever explained _______?" is: no.