first of all, no other source is reporting anything about a pilot called "skater boys, " including Variety and Hollywood reporter. Certainly if this were a real pilot, one of these two magazines would have it on their list.
secondly, if you read the forum section under skater boy, someone says that Fox picked up the pilot despite the fact that it was only halfway finished. DOESN'T HAPPEN. no major television network is going to pick up a show that couldn't even complete a pilot.
finally, brittany is most likey contractually obligated to stay with AD in the event it's picked up again, so her role in "skater boys" would be re-cast.