Glad we could help explain. As far as contacting Facebook, there really isn't much of a way to do that (that I'd recommend). Their systems are completely automated to detect, and unrestrict, these types of things.
The best I'd recommend is simply waiting about 5-10 days and it (should) clear itself up. During the way, make sure you (and your friends) Like a few pages and leave some comments (and don't delete them). It will be a little extra effort to go through the extra click hoops. By doing that though, you're showing their systems that your sharing is intentional and not coerced.
After that, if you're still restricted, you can submit a bug report to Facebook on the page below:
developers.facebook.com/x/bugs/trending/
It's not technically a bug, but may get their attention. There isn't an easy "Contact Us" form you could use though.
I hope that helps,
Alex