Mr. Monk and the Really, Really Dead Guy - S5-E15
Continuity mistake: In the scene where Monk mistakes the plasma TV for a blackboard, he writes the words "BODY MOVED" on the screen. Initially, he writes the "B" with an extra long vertical stroke; the next time we see the text, the vertical stroke is of a normal length. The text reads "BODY MOVED" when Monk stops writing, but when the FBI agent walks over to the screen to try to wipe it off, it has changed to "BODY M".
Answer: Stottlemeyer was already upset after the phone call. He was trying to get "Kevin" (who would have to be a judge, but no further character information is given) to issue a restraining order with no evidence of needing one, except that Adrian Monk said she needs one. Kevin said he would need to "sleep on it." So it's clear they've been trying to provide protection and unable to get the results they need, which seems to be based on no one trusting Monk the way Stottlemeyer does. He's just angry that they failed to protect Linda despite all their work. Although it does feel like a scene was cut, or altered, from the show that shows the futile attempts to protect Linda which built up to his outrage.
Bishop73