Unless you're swiping from the very edge of the bottom of the screen, nope.
I use Flipboard daily and I haven't accidentally launched the Control Center at all or accidentally made the grabber come up. For the grabber to come up you have to swipe up from off the screen.
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Weird...I'm not getting any Flipboard update at all...
EDIT: As soon as I posted I got the update!
Speaking of flipboard it was literally just update for iOS 7
