I don't think it's horrible at all to take it and keep looking -- as long as you don't have a habit of that. My sister runs two companies and one of my best friends is in HR, and they both say that it's OK to leave one job in a relative hurry as long as you stay at your next one for a reasonable amount of time, two years or so. Recruiters will understand "it was a bad fit" -- you don't necessarily have to tell them why.
I've done my share of temp work, too -- at least where I live, it's really hit and miss as to whether you even get placed, and how long the placement lasts. And because I am not "proficient" in things like Excel (I'm a journalist, WTF do I need to use Excel for? -- I figured out the little I know while I was taking the temp placement test, LOL), I can't get the well-paying temp jobs. I always end up doing filing for a week or something.
Since you have more marketable skills

, you could probably do pretty well in a temp job (I know there is a whole temp agency specializing in accountants) but I'd go for the better job security and just keep looking.
That's my .02, which is worth probably less than that.

Good luck.
Candy