Probable cause, is a pretty muddy area. In this case, he escalated the situation, whether you like it or not, is irrelevant.
Colorado has a mandatory arrest policy.
With just initial reports, this fits : "Other acts or violations committed against a person, property, or animal with the intent to coerce, control, punish, intimidate, or seek revenge against an intimate partner."
Jerry was stupid, jerry payed a price for not being more careful in his relations, Jerry should have walked away or called the police himself. Jerry should have kept his cool and not reacted as he did.