although i too wasn't at the park at the time of the boik, I was standing next to the guy taking the cell phone call from the defensive coach from the dugout as this chithouse was in progress.
the coach originally argued that "how can the guy from second score when the guy from third is put out of appeal?" Once the three umpires listening to this over the cell phone (and about to enter the Pyramid Brewery across from Safeco Field) pretty much agreed that R2 could score, he switched to arguing that because of the home team on the field, they were unable to make a play.
My personal opinion is that this coach is creating this "situation" once his first original complaint was denied. coach's hindsight I like to call it as they begin to rewrite history.
I score R2 unless I'm 100 percent confident that a play was being made on him. A smart catcher (if it was he who threw the ball to third on the appeal), since he knew he was about to retire R3 on appeal, would lay a tag on R2 first as he was just standing there and then make the appeal. Then we have a tidy triple play.
Bullwinkle originally wanted to get someone out for passing a runner! HUH???