I'm not sure where that's coming from? The NAO is starting to relax and YES, we had a shred factory over the last couple weeks (and still do), BUT what you are forgetting, is that the shredder is running outta gas this weekend, and the upcoming event just has a nice antecedent airmass to work with, and its deep enough to keep most out of worry for taint, but is not the big bully it once was which gives this storm a chance to lift and not suppress.
Point is, you cant just say "atmospheric memory" when the base state is changing. It's been said many times....gotta pay attention to 500's/700's and not just surface.
EDIT - and fwiw, I'm not saying in the end that you arent correct, but you cant just look at this storm the same way we've been for the last several weeks.