Rick didn't want to make decisions. He didn't want to be a leader again. He was still in his shell. That scene with the talk is when we see him 'coming back' which was the gist of his part of the talk. The Gov however saying 'Liar', I didn't get that part.
They made that talk in the barn seem very long, yet what could they have possibly talked about? The terms were pretty straight forward, and the Gov wasn't even up for discussing Rick's terms nor hearing his thoughts really. Felt a little long for the little bit of info we got form it all.
This article has spoilers if you havent been caught up. and talks about teh comic a bit. Kirkman talking about last weeks episode. http://comics.ign.com/articles/122/1220591p1.html?utm_campaign=twposts&utm_source=twitter Holy crap! I totally forgot the dude whispered something to Rick at the end of the first season! Wooot.