Damn, I scanned down below and saw it too. That's like a word for word, scene by scene breakdown of the episode...
Wow, I can't believe how spot on those summaries were. AMC has a serious leak problem.
Here's what I wanted to type out in the other topic, but decided not too.
A little bit of fix on these:
Carl kills Shane (similar situation) and way earlier.
Dale dies far later and is killed by human cannibals.
Rick loses his hand fairly early in the books.
Michonne is introduced much earlier.
I think those are the major ones, could have missed a few.
Carl Kills Human Shane outright, before Shane kills Rick. Rick goes back to Shane's Grave weeks later, once he learns that any Death will result in "zombiefication", and partially unburies Shane, and kills Zombie Shane.
Dale gets mercy killed by Andrea, after he's already been bitten by a zombie, taken and partially eaten by cannibals, and left as bait to draw out Rick's Group.
Rick Loses his hand about halfway through the prison arc. When he, Michonne and Glenn decide to track a helicopter in the area. Eventually coming across a town ran by The Governer, and things go decidedly south.
Michonne is introduced about 1/4th of the way into the Prison Arc, during a mini zombie outbreak brought on by a standoff between Rick's Group and the Surviving Prisoners