Sorry, but I remain unconvinced. I'm quite sure that he wanted to use Caballero as a tactical substitution and that decision was stymied by Arrizabalaga's refusal to obey orders. Why on earth Sarri was then lambasting the hapless Caballero is another question.
None of it washes with me either. I was just summing up the various quotes from Sarri, Kepa and the club.
Re; Caballero. I haven't seen the incident back, but I thought at the time he was just venting in the general direction of Caballero, and not actually having a pop at him. The poor fella did nothing wrong.