Probably not. I don't think there's a forum on his website, and let's face it, when has "Y" listened to ANYONE?
There's a fascinating interview with JLT who talks about how he had to fade Yngwie out during the mixing of "Dreaming" because he soloed all over the bridge vocal part. And then brought him back in for the key change - which is a fantastic bit of drama in a good ballad to start with.
I bet no-one before or since has dared take over in the control room.

He had a popular vocalist with Mats Leven - and fired him after one album.
He's gone for Dio-ish vocalists ever since, but I don't think it works as well - and I don't like Mark Boals on recordings either (live he's a monster).
For me his best vocalists have been JLT and JSS. Goran didn't have the power, and Mike Vescera + Tim Owens are too screamy/shouty for the softer material.
But he seems to want go down the metal route, despite his guitar tone being wrong for the genre. And he can't produce or mix.

Sad downward spiral for a supremely talented musician.