[pickdenis]

I don't have a complete answer for you, but:

> probably offended so many people in my circle by not seeing/not replying to their emails.

If I were you, I'd BCC everyone whose addresses you remember with a short note saying to the effect of "I lost my other mail address [e-mail], gimme a sec pls" and I'm sure this incident will have no long-term impact on your reputation. Shit happens.

As far as getting help from Google goes, I think the only reliable method for non-paying customers is to raise a huge stink on websites like this or Twitter. Take this with a grain of salt, however; I'm much more likely to observe these big stinks and less likely to hear about people just calling support and getting help. It _may_ be possible.