Thought I'd report on your originating thread too:

Some success, I guess. Resolution grade: A- (for the time it took to resolve the issue). Customer service: D- (for the convoluted way I had to go about getting help).

(1) I found that a Google employee stevedrennan had been involved in a similar case in March 2009. I looked at his profile, and found he's on Twitter. I tweeted him using his account name "@stevedrennan," asking for help on innocuous document flagged as "inappropriate content."

(2) A few hours later, he DM'd me and asked for the URL of the document in question. I sent it via Twitter.

(3) About two hours after that exchange, I received an e-mail from Google. There was no content in the body of the message; there was only a subject line, and I quote "--error--". I checked the document in question, and the block has been turned off.

Best of luck -- jlaurel