Citizen’s arrest is not illegal in CA: https://www.shouselaw.com/ca/defense/penal-code/837/ Considering the guy was almost a foot taller than me, I was pinning him down with only a fraction of his body weight.

My usage of instinct, something that I did subconsciously and without thinking, is covered under several dictionary definitions and examples [1-3].

[1] https://dictionary.cambridge.org/us/dictionary/english/insti... [2] https://www.merriam-webster.com/dictionary/instinct [3] https://www.dictionary.com/browse/instinct