Well I have done probably 1000's of downwind landings in C185s in PNG...and 1000s more in Islanders and Twin Otters. My first base in PNG, Kundiawa, was a 1000m one way strip that 'enjoyed' 10-15kt quartering tailwinds from mid/late morning - essentially every day. Once I got a handle on the aircraft it barely raised a ripple on my otherwise calm visage. I am prepared to admit however that the first little while (I had <400TT starting out) was BLOODY hard on my adrenaline glands
In fact virtually all one way mountain strips had tailwinds (adiabatic) from mid/late morning every day.
Maybe my experience has no relevance to the case at hand...10-15 sectors a day/6 days a week, on strips where going around for another try is out of the question, at or above MGW, makes you VERY good at putting the main wheels pretty damn close to EXACTLY where they need to go every time - Its far removed from a weekend pilot landing a Citabria downwind because he just didn't pay sufficient attention.
Plan B on a one way strip?
Well on PNG one way strips plan B was usually crashing into the jungle very nearby.
But having said all that a tailwind overpowering the rudder is NOT a reversal of rudder effect.