Yeah I never mind being contacted about a beer I judged. It really is necessary to send the scoresheet along with it though.
I almost always just average the score with the other judge... but there are times where you don't necessarily want to do that. For example if the average score is 37 and they need a 38 to get an honorable mention.
I've been to some comps where medals are handed out soley based on score (like all beers in a certain range get bronze medals, next range up silvers, etc...)