The heart of the fight between him and the diocese concerns a sum of money ($3,000 I think) that the diocese is suing him for. Apparently the diocese had taken (stolen..appropriated...take your pick) money he had collected for the construction or renovation of a TLM chapel. So, knowing this was the diocesan plan, Fr. Rodriguez apparently started putting TLM chapel donations somewhere els besides the parish general fund. Nobody ever accused him of using or even planning to use the money for any nefarious purpose, but since it was irregular the diocese came after him for it.
He needs to leave that diocese. Seriously. They'll just continue to persecute him. The nuncio and the Vatican think the Mexican people there was liberal Hispanic Bishops, so that's what they keep getting.