Thanx for this YouTube clip Stella, yes it must have been somewhat bitter-sweet for Steve (at the time - as you've said elsewhere - he's well moved on since then), but it would have been a good move for him. No part - but sweet in that there was some financial compensation (as reported).
I disagree with CM about the implication of lesser acting experience, I would have been pretty confident of Harley being 'up there' in the acting stakes, as Bowie or Sting were.
At the time of the Phantom single (I think that I've remembered this correctly) it was about '86. That year I'd bought my own first home (flat) and in it (that Christmas) was a compilation album with Sarah and Steve singing Phantom...(I still have it). I love Sarah's voice anyway too, I have her with Andrea Bocelli on my old Walkman, with a few Cockney Rebel tracks et al, naturally.
Difficult one for me as a fan too, because I've liked both Steve Harley (since 1974) and Michael Crawford's work (for about, as long).
All the best to you and yours...