2010 NASCAR Nationwide Series Champion Brad Keselowski may have let a seemingly innocuous tweet unmask NASCAR's plans for the Nationwide Series Friday night.

On Twitter, Keselowski stated that he's been ruled "ineligible" for the Nationwide Championship in addition to his being excluded from the 2011 Budweiser Shootout.

"Needed a good laugh tonight after being ruled ineligible for both shootout and NW championship in one loooong week. Thanks for the support!" appeared via Keselowski's Twitter account on Friday.

The tweet seems to be an indication that at least the defending champion has some knowledge of NASCAR planning to impose some restriction on Sprint Cup drivers participating the Nationwide Series or at the very least running for a championship.

On Saturday, Keselowski said via twitter that he hasn't received any official notification, "To clarify last nights remarks about NW championship No I have not been notified by anyone at NASCAR about the 2011 rules for eligibility."

Keselowski's Twitter statement is the latest in a growing list of incidents where a driver or network personality has derailed a coming announcement.

There has been speculation about NASCAR's plans to curtail the phenomenon known as "Buschwacking," the practice of Cup drivers competing regularly in the Sprint Cup's feeder series. It's named for the Nationwide Series former sponsor, Busch Beer.

NASCAR has not made a formal announcement involving Sprint Cup drivers in the Nationwide Series, but the new rules are expected to be made public prior to the start of the 2011 campaign.