You are correct on this one but you are also off.
Don't judge Corwin by his sumulative stats right now. The 0-3 with a 5+ ERA is completely insignificant.
What is significant, is him getting his confidence back and believing that his arm is healthy. If/When he is able to get get over that mental block and let it fly again, then you can start judging his numbers again.
Corwin has really struggled and has fallen off as a prospect, you are right there. But the Sox are doing everything they can to get him back into the fold and that will mean taking baby steps with him for the rest of this year and likely into Instructional League.
Next year will be the year that in my mind, will make or break him. Could he make it to the Bigs later than that? Yeah, but the odds go down as well as the potential impact he could make.
Interesting theory, but in reality an honest question. Have you seen a prospect go this high, fall this far this fast, and still make it in the bigs?