I was there..!
May 1987
I went because my cousin, who was visiting from Germany wanted to go see him live. Apparently Idol was blowing up in Europe at the time.
'Concert was at the now gone Exhibition Stadium/Grandstand and yes... After the Cult finished their set 50% of the audience got up and left Lol.
I recall after being introduced, Idol ran up onto stage and un-rebel-like wiped out... Falling on his ass... lol.
Fast forward 35 years... My wife and her girlfriend went to a small venue in TO last year to see Idol...
An acoustic show, just him and his guitarist... She said it was actually a really good show.