iOS 7 forgot restrictions passcode

I have updated to iOS 7. My location services have been disabled and findmyiphone is turned on but with restricted access. However I have forgotten my restrictions pass code so am unable to turn on location services. If I try and restore iphone via iTunes it tells me I have to turn off findmyiphone first. But I can't do this because I have forgotten this restriction passcode.

Totally stuck now. Seems there is no way to reset my phone.

Any ideas?