So let me get this straight.
According to theory:
1. global warming causes shrinking sea ice
2. shrinking sea ice causes polar vortex
3. polar vortex causes regional colder weather
4. regional colder weather proves global warming
Wonderful. Now, how about the fact that THE SEA ICE IS NOT SHRINKING!!!
Where does that FACT fit in with the WONDERFUL THEORY???
In this type of science they certainly have no use for facts like that. The recovering ice spits out a little extra warmth during the refreeze each fall: http://ocean.dmi.dk/arctic/meant80n.uk.php You may need to click on some prior years to see that. But that is about it and the only possible effect would be in the early to mid fall. By late fall the temperatures vary naturally.
There are two mistakes in this "science". First the weather determines the arctic temperature above the ice during the winter and therefore the weather determines whether the polar vortex "distends" or not. The second mistake is that climate models are fairly unambiguous in predicting the opposite of the conclusion in this "science". Not that anyone should believe the models, but if you do, then you would see a stronger, flatter polar jet in winter. The fact that these "scientists" have not studied those models is no surprise. The global warming catastrophe crowd is full of morons who ignore prior science and try to fit whatever catastrophe they can find into any new theory they can invent.