A bit misleading, this article.
These aren't "the glaciers in Antarctica" so much as they are TIDEWATER glaciers on the Antarctic Peninsula -- an area which extends outside the Antarctic Circle, and is not representative of the continent as a whole. The peninsula has been warming, unlike the rest of the continent, for example.
In an earlier paper ("Cryospheric impacts of climate change on the Antarctic Peninsula"), D. G. Vaughn of the BAS writes, "An estimate of the net imbalance of the northern Antarctic Peninsula ice sheet, suggests that it is now contributing around 0.16 ± 0.06 mm to global sea-level". This is a sizable fraction of the total contribution assigned to Antarctica by the IPCC (0.21 mm).
The WAIS and EAIS, where most all the ice is, are comparatively stable.
It's too early to panic, folks.