It's been said a million times, but i'll always "thank" Steve for that. Blaze did his best with what he was given. And he was given a set of songs that were not in his range and Steve wouldn't step the rest of the band down so he could sing them. So Blaze ends up tearing his voice apart every night singing songs that aren't comfortable, then gets blamed because he "can't sing the classics" and kicked out because "he's having throat/singing problems." Blaze is a great singer and even sings the Maiden songs fantastically when he's aloud to play a step down and sing in his comfort zone.
Edit:
He's not singing this song in Maiden's original key, and I think he brings a lot of emotion to it here. If Maiden let him sing all their songs like this, who knows? He might still be in the band.