Yes, Rick’s detective skills are boss.
After what happened to him with the Governor and then Joe, Rick is just ‘stepping up his game’ to avoid any more traps.
I still can’t figure out how he deduced that Carol killed Karen and David earlier in the season.
That's a question I would love to see answered.
He found a bloody handprint that was kind of small, so he probably thought that a woman did it. I don’t think he knew it was Carol when he asked her.
After what happened to him with the Governor and then Joe, Rick is just ‘stepping up his game’ to avoid any more traps.
That was a part of the episode that I didn't get. He was cautious enough to bury weapons but not cautious enough to leave Darryl or Michone behind until they found out everything was safe. That would have lent a lot more credence to his "messed with the wrong bunch" line than people hoping that Carol and Tyreese wouldn't walk in just as oblivious to Rick's plight as Rick was to Glenn and the other bunch.