All Bungie denied was:
This evening, Kotaku Australia published a blog entry to their website claiming that Bungie recently terminated as many as thirty contract employees without notice or justification, effectively eliminating all non full time staff at the request of our publisher, Activision-Blizzard.
The claim is false.
Bungie has never been asked to lay off any employees or contract employees by our publisher, Activision-Blizzard, for any reason. The talented professionals who grace our offices day in and day out are the lifeblood of Bungie our most cherished commodity and the unsubstantiated rumors posted today are in direct opposition to the culture and values that we believe make Bungie an exceptional place to work, and to call home.
(Oh, and since we're on the subject, we're hiring.)
UPDATE
To clarify, Bungie has not experienced layoffs or group firings of any kind.
I don't believe that they will have fired anywhere near that amount of people. I'm sure they did fire a couple people (where else would that Tiger/Destiny information come from?) but as to the exaggerated extent that that contractor claimed? Doubtful. I know 343i took a handfull of ex-Bungie employees onboard, so it's likely any fired Bungie employees went there.