How could it be SOPA related? SOPA hasn't (and probably won't) pass, not to mention it will take months or years to implement enforcement even if it did.
Every net provider has connection issues every now and then especially Verizon as their networks is quiet complex, I wouldn't read anything into it at all.
Although they'd never admit it, there's a good chance either something went wrong or they were doing scheduled maintenance and simply turned off the call center because they knew the call volume would become so great and it would all be people asking what's wrong. My electric company does the same thing, but they're at least polite enough to put a recorded message saying there's a known problem in your area and give a time estimate.