they are in a way competing teams, but i am sure they are civil if they meet at a party, store etc. they wont fight, kara goucher and shalane flanagan did as a joke have a verbal fight in the media, where they said things like i am better looking than her etc. that was a joke. individuals of the separate groups run together, but it is rare as they have different schedules.
as for the ????? marks after adam gouchers name, i am sure he is still in the salazar group and he will be as long as his wife is, though he does not seem to race anymore, he did say he wanted to win the olympic trials marathon, so he can stick out his middle finger as he crosses the finish line as a way to get back at the letsrun posters who have been bashing him and saying he is washed up.
personally i hope he wins the trials marathon to see him do that. i would also like to see him win the olympics and make the same gesture with billions of people watching that would be funny, and to make it better i would have him carry the flag for the USA in the closing ceromony, that would be hilarious, imagine the reactions worldwide.
not that i think he could win these races, but it would be funny.