After an annoying Labor Day weekend spent in contact with customer support, all site-related functions, including TypeKey, are back in proper working order. My hosting company installed a new firewall and it was blocking communication between Unloosen and TypeKey, but the line is open again and things are back to normal.
I highly encourage continued use of the TypeKey system for leaving comments, but I'm leaving the comments open for the time being. If spam comments become an issue, I'll move back to limiting the comment functions to TypeKey users. For now, feel free to comment using either method.
And while comments are on your mind, why don't you test Unloosen's commenting system by leaving feedback on Swamp Ass Senators?