Jeremy, considering FB isn't the one seeing this particular problem and it ONLY occurs when I schedule AND use publicize, I doubt that's the FB plugin is causing the error. And it doesn't seem that @nhlabor and I have the same problem at all...a similar problem, but not the same problem.
Trust me, I've researched this for a month now and even had a web developer look at everything. When he and all the debugging tools can't find any OG or meta tag errors and it ONLY occurs when I use publicize to share to FB on a scheduled post, I think the problem is on your end.
As for resetting the connections...been there, done that. And again, if I publish live it will share on FB exactly as it should. So nope, resetting the connections didn't make a difference as the connection is fine (and I've already reconnected as that seems to be the only "solution" that gets offered up).
This seems to be a known bug in the developer circles and I'd love to know what can be done to fix it.