Where would he be now if he had stuck to his guns and continued specializing in the 800? I think at least a mid 1:43 pb and an Olympic team.
Sometimes a fast time at 1500 can be deceiving, especially when you're dragged to it and the race plays out exactly in the favor of your racing style. Now, to give some credit to Vig, Robby did run 3:34 (closing in 53.x!!) out of nowhere, so I can see the appeal of moving him up to 1500 for the trials and assuming he would have a massive advantage in what almost always amounts to a slow race with a blazing finish.
But I question the long term wisdom of coach Vig. It seems like quite a rush the move the young Andrews up to 1500, especially given the knowledge that he clearly has trouble being in pain from the gun. The wise choice, in retrospect, would be to keep him at 800 and gradually get him comfortable with the 1500 meter distance over a couple years, and once he stopped showing improvement over 800, think about moving up permanently. I think Wheating made a similar mistake in trying to move up immediately after college (albeit a more justified mistake considering his unbelievable 3:30.9 in Monaco).
The other thing is the bringing in of Alan Webb. Even ignoring his host of psychological issues, I could not think of a worse training partner for a 20 year old just starting his pro career than a once-great has-been who is clearly in a completely different mindset about his career. Maybe if it was a big group like Jerry's, where webb's influence would be more spread out, I could understand. But subjecting Andrews to Webb's state of mind day in and day out is just a plain stupid move. The more you think about times, miles, steps taken...the harder it is to just put your head down and make breakthroughs.
Please get Robby back to basics and he could be an unbelievable 800 (and soon enough, 1500) runner.