I must say that I do not see anything "PC" whatsoever about keeping their options open at this point.

The nonsensical corollary would be that they were politically incorrect last season when they openly discussed the likelihood of their post-Sochi retirement.
Examples of Virtue/Moir's remarks in Jan 2013:
.... Virtue and Moir ... have talked retirement following the Sochi Olympics.
“There is a good chance,” Virtue said, on London being their world finale. ....
Virtue ... and Moir ... know that time is ticking down on a career that’s already stretched 16 years, and they make a point of not letting a moment go unnoticed.
“Even in day-to-day training, we always say that to each other, there’s not much left,” Moir said. “We laugh because it seems like it hasn’t been three years since the Olympics already, it goes by so quick.”
Moir, who claimed his fifth national title Sunday with Virtue, said the two have begun to think about the next stage of their lives.
“Which is natural when you get to be 23 (Virtue) and 25 (Moir), but at the same time, we’re trying to take in every moment,” Moir said. “Because it could be the last 13 months of our competitive career, we’ve had a great run and we just want to finish it off the way we want, on our terms.”
Other than a change in her own true feelings, Virtue had no reason to take a different position in the recent IN article, IMHO.
They already have an Olympic title and two world titles. They have been great ambassadors for ice dance, for Skate Canada, and for Canada as a whole. Anyone who would be a source of external pressure for V/M to prolong their competitive careers has no justification for meddling. Other Canadian ice dancers are prepared to step up and become national champions worthy of international podiums.
As far as I'm concerned, if V/M are happy, then I'm happy for them -- whether their retirement comes sooner or later.