It's not a matter of grammar. I'm a descriptivist too, but the grammar is quite conventional, no more remarkable than if they said they were annoyed with, or aroused by. (Pause to imagine the staffers aroused by fast-tracking the legsislation. Well, yeah, probably.)
It's a matter of tone.
But actually, I admit I think it's kind of awesome, because you can see the historical progression of deformalizing of the language.
Here's the full sentence:
"The White House didn't say much about last night's health care talks between President Obama and congressional Democrats, but officials made it clear they're cool with fast-tracking the final phase of legislation, with no public hearings and no Republican involvement."
Here's a sentence from a comparable article from a January 5th, 1910 newspaper:
"Congressmen who have been counting on the support of President Taft for a bill to prohibit dealings in futures in agricultural products were surprised and somewhat dismayed to-day to learn over the signature of Mr. Taft that there was no authority for the statements which have been made from time to time recently that a conference was soon to be held by the President."
Here's a comparable sentence from a comparable article from a January 7th, 1810 (Australian) newspaper:
"HIS MAJESTY having felt the utmost Regret and Displeasure on Account of the late Tumultuous Proceedings in this His Colony, and the Mutinous Conduct of certain Persons therein towards his late Representative, William Bligh, Esquire, then his Captain General and Commander in Chief in the said Colony, in order to mark such His Disapprobation of the said Proceedings, has been Graciously pleased to appoint me His Representative in the said Territory of New South Wales and its Dependencies; commanding and requiring me, previous to the Opening of His Royal Commission for that Purpose, to Reinstate the said William Bligh, Esquire, in the Office and Situation of Captain General and Governor in Chief of this His Colony, in case he should be resident in the same at the Time of my Arrival."
With these data points, I am able to predict that a comparable sentence from a comparable article in a January 6th, 2110 newspaper will read as follows:
"Yer law bout self backup insurance them PirateParty babes wanted -- doornail-dead baby, doornail dead."