LOL, I know...he was not concerned IN THE LEAST. Just another day at work.
By the way, on a review and recap site, I saw a very interesting take:
Morgan shows up all sane and ‘cleared’, and now it’s RICK that is all covered in Walker Goo and looking crazy, executing Pete just in time for Morgan to see it.
And there may be some validity to Morgan’s impression that Rick is now kinda crazy.