Does Disclosure Excuse Behaviour?

As I've noted before, I've been with my company for a while now and have seen quite alot of people come and go during my time. Some have been very intense personalities, some have been wallflowers and some have been the proverbial bull-in-a-china-shop mentalities where they start trying to change things the instant they get hired.

Which is a bad idea.

Best bet for longevity here is to learn how things are done and then make adjustments to those codified processess. Don't push too hard too quickly or you will get bounced. And don't promise what you cannot deliver, that's just stupid.

Anyway, I just had a short impromptu meeting with one of the folks here. During the course of the meeting, he let me know that he was going to be a "flaming asshole" for the next 35-60 days because of the new hires, because of the new pressures being put on him to perform and the rather large target he put on his back when he came on board.

My question is, does public acknowledgement of an intention to be an asshole excuse the flaming assholery?

I'd be inclined to say that it does not but the warning is nice. Otherwise every politician would start every speech with a disclaimer that they were going to spew outrageous lies and try to make bad news sound good (yes, Georgie, we're winning in Iraq even though the terrorist attacks keep rising in quantity and severity).
Venom -1

[Update: Further, would you rather someone be nice and polite to your face and stab you in the back when you're not around or would you rather they be poison to your face as well?]