It's possible, but I doubt it. To be honest, the passcode locks on the iPad were established as a security measure - in order to lock down a stolen iPad. Maybe there is some back door route that only Apple know, but for sure you'd have to take them the invoice or other proof of ownership otherwise they'd have no way of knowing that it's really your iPad. Please don't misunderstand me, I'm not suggesting anything here, but the guy in the store won't be able to do anything unless he can be 100% sure it really is your iPad.
I've certainly not heard of any way of bypassing the passcode - if there were, it would soon 'leak out' and then the whole point of it would be lost. Maybe some other member will have a suggestion, but I've not heard of any myself while I've been a member of iPad Forum - which, admittedly, is not for that long!
Sorry I can't be more helpful - perhaps wait at least 24 hours to see if anyone else has a great idea.
Tim
Scotland