Gee, very liberal use of "honest" "honesty" "integrity" and "cheat" here.
Did you read through the comments on irunfar? A careful reading will show that this isn't quite the black-and-white right-and-wrong issue that many try to make it.
As Marko stated, ISF rules are a little different. And as the RD posted there, it wasn't clearly, unequivocally stated in the rules that switchback cutting wasn't allowed. It wouldn't be much of a stretch to assume that European ISF rules would have applied there.
The PPM rules, on the other hand, are very clear on switchback cutting. I would be very surprised if there are any problems with that here.