interesting input guys.
After thinking about this for a while, I've come to the conclusion that even if the specialists understand the flaws of the pricing model, well... they also have to deal with it just like we do, and they're certainly not immune to inefficiencies.
It's my hunch that the second they understand what you're trying to do and intuitively know that you may very well be right they immediately do what they have to- which is, like trajan said, trade the stock delta neutral or hedge with options with similar contra deltas. Perhaps right upon buying the 65 call in the Brl trade (and immediately taking on the heat) they would turn around and buy the 65 put to try and get as neutral as possible.
I don't see how they could refuse to sell you a far otm 80 call, almost a sure thing premium, albeit tiny for them. The 80 call wouldn't cause them much worry because all the greeks there are pretty insignificant.
So their awareness of the flaw in the 'drunkard' model doesn't mean that they would refuse you a trade. They can't. They have to take the order flow and hedge as soon as they can.
So maybe the implications of this are quite interesting

erhaps we shouldn't worry about option specialists saying no to trades just because they are high probability ones. While they can buy on bid and sell on offer, they also cannot forsee the future, and in my view mostly react as fast as they can when faced with good traders' orders.
One caveat: when it comes to gaps and event driven surprises in the stock, (earnings, FDA announcements etc) then those fellas definitely jack up vols as an extra 'hedge' against uncertainty. In my view no amount of delta neutral hedging is of much help against the mighty gap down or gap up... only way out is to make those suckers pay as much as they can for that premium... which in turn, creates opportunities in vol skews.