I take that route home every day from work.
Yesterday there were cops at the bottom of Stoney in the construction zone...but I was doing about 78 in the 60 and they let me go by...so maybe the limit has been bumped up to 80 since there were no workers in sight? Or, more likely, they were just looking for people going 20+km over.
Whoever that jackoff was, I would have purposely gone down to the limit exactly and kept braking.
I'm a horrible speeder but I don't get pissed with people who are doing the limit...as long as its not in the left lane. Unless they are Asian and can't see over the steering wheel...then it's warranted.