I doubt it. I think my lifestyle would certainly change, and I would end up playing in a lot more big tournaments (probably most of the WPT and WSOP Circuit events), but I wouldn't quit my day job.
Then again, keep in mind that I technically quit my day job 4 years ago. That's when I decided I didn't want to work for the man any more, and I've worked for myself ever since. I set my hours, I decide how much I want to work, etc, etc... Life is pretty good.
If I won Aruba, I'm sure it would change my life though... I'd play more big tourney poker, like I said, and even though I wouldn't completely quit, I would scale back how much "day job" work I do.
Of course, we all know I'm not going to win.
When I make the final table and take down a relatively big payday though.... well, that will be interesting. Then I'll have some thinking to do.