Skyler the very practical wife tells Walter the obvious: Jesse must be murdered. After all, he doused the White house with gasoline. Saul the lawyer tells Walter the same thing. And yet he can't do the deed that had been so easy with Mike. Also, he had no trouble trying to poison Andrea's baby son. Has the return of cancer changed the way Walter makes decisions?
In addition, he is hesitating in killing DEA agent Hank. That is also strange since Hank really means nothing to him. He is family only by marriage, not by blood. And Hank has toyed with Walter, including putting a tracking device on his car.
Will the next episodes bring the old Walter back? Or will Walter continue this slide toward some kind of salvation, even if it only means preserving his definition of himself as a decent human being. After all, he has been a responsible, at least financially, husband and father.
It's not unlikely that distraught Jesse will commit suicide. Then we have to wonder how Walter, his mentor, will respond to that.