Super vague and potentially misleading article
What it sounds like to me is that they've delayed the game and since the game isn't coming out right away, it doesn't make sense to keep QA on the books for its release.
Likely they've pushed the release of the game to next summer or next fall and since these were contractors they're easy to let go and bring back or hire new contractors when they're ready for a QA push, mostly in line with them returning to efforts of the game.
"Put on ice" has too ominous of a connotation associated with it. Is the game canceled? Is it being put on hiatus? Is it getting limited development resources at the moment?
There seems to be a group of trolls, anti sony fanboys, anti gaas trolls (and I don't like gaas), and anti druckman/naughty dog trolls who want to make a mountain out of this, without knowing any real details