In my own journey on becoming PMO-free, I have found that these micro-compromises are the most dangerous. Very rarely do I have a sudden urge to watch porn. In my case, I will “out of the blue“ suddenly start having a sexual fantasy. At first, it seems rather harmless, but if I let myself go with it, it can lead to strong arousal and then to edging, etc.
Today I caught myself two different times starting to have a fantasy which I then quickly stopped in its tracks. I would be curious if other brothers have a similar experience.