Launched: Share with your Google Contacts

Very cool! A follow up question I had was re-associating your Google email account in the People’s column. I accidentally chose a Google account I didn’t want for a particular doc but haven’t been able to figure out how to remove and associate the other one, or add multiple. Is that possible at this point? BTW, I stumbled upon this a day or two ago, that’s how I realized this, but I just checked again after this post and still was uncertain.