It would appear that the people have been heard. Just in the past hour, Facebook has removed the "abusive content" flag from Musings Over a Pint. As with the imposition of the ban, I've received no notice or explanation from Facebook as to why they imposed this restriction.
The outpouring of support I received in the past 24 hours was very uplifting. Words of support and encouragement came from both sides of the aisle. It was indeed very refreshing. From what I've read when researching this tactic Facebook employed to block the expression of opinions, I have reason to suspect this won't be the last time I see it imposed, unfortunately.
My sincere thanks go out to everyone who helped spread the word, and who wrote Facebook in support.