SPOILER ALERT!! For those who haven't seen the episode, look away!
I like watching Talking Dead afterwards, they touch on every little symbol/meaning, & explain some things that during the episode, I'm wondering "wait... what?"
Yea, Morgan's supposed to be unhinged. Rick lost his best friend & his wife, & he had a serious breakdown (talking to Shane & Lori on the phone & chasing around Lori's ghost, disregarding his & everybody's safety). Now Morgan, is a "weaker" citizen (not a Sheriff, & born leader, like Rick) who couldn't let go of the past & his wife, until it was too late & he had no choice ("i was seeing red"), but cost the life of his son. Now, he's been alone & has been seeing others turn, & has realized everybody turns, so he's left with the feeling that "good people die, bad people die, & the weak have inherited the earth". He feels for being weak & not protecting his family, he's left with "clearing". Meaning many things, clearing the town/country/earth of the "walking dead" (living & walkers), or clearing himself of feeling inadequate, or clearing his soul.
This encounter also serves as an enlightenment for Rick. When he's trying to convince Morgan to come back to the prison with him, he's saying "this can't be it. You gotta be able to come back from this". He's realizing he should be taking his own advice. He also knows that he failed Morgan. Rick found his family, but didn't keep his word to communicate with Morgan, to reunite. Rick's slowly coming back, regaining his mental health & his humanity. He knows solidarity is no way to live/survive. He has to give survivors a chance, instead of seeing them as a threat & turning them away, like it once was, & like it was done for him.
They didn't stop for the Hitchhiker at first, because they hadn't gotten the re-freshening in humanity & remorse. I think if he was alive on their way back, they would've picked him up. Instead, his back-pack should suffice (it's the thought that counts, right?)
Thing I like the most about this episode, was Michonne backing-off, opening up, & connecting with Rick & Carl. She's an asset to the group & she's starting to realize that she needs to stop being so cold & secluded.
