Well , that's that.
Knowing some of the people involved I never doubted for one minute that the allegations were true. The only question in my mind was whether it was illegal or not and how much it was going to cost us. I'm still not sure about the legalities but the fact that AC agreed to a settlement strongly suggests to me that it would have been difficult , if not impossible to gain a positive legal settlement.
I have to hand it to AC though. They played this situation perfectly and gained maximum benifit from WestJet's foolish move.
Time to move on.