Just watched ep 5.9
I think Walt is really beginning to loose it here. He is totally irrational. He can't focus, he can't keep stuff to himself until he has more info. He just blurts out any thought that crosses his mind.
In this ep he starts out accusing Jacob of having Hector kill Malakai (spelling?) when it is obvious that Malakai could have spelled out Hector Lives just to cause trouble.
He then has an idea about Hector and goes off the deep end instead of playing his cards right.
Right now, he is as convinced about his current rant as he has been about every rant in the show sofar that turned out wrong. I am beginning to like Nighthorse more than Longmire. At least that guy keeps his cool.