what if the ricin is for skylar? straight called her a ditch and unworthy and ungrateful.
That whole speech was an act.. done intentionally to make her look better in front of the cops. Recall how Walt broke down crying in the middle of his insults, if he were truly angry and meant it.. he probably wouldn't have done that.
And why would he want to orphan his children? You saw how broken up he was when Holly was saying "Mama".. it seemed clear when he returned Holly he wouldn't want to hurt Skyler or the kids anymore. Because I can't imagine Walt Jr. comes around anytime soon and sides with his dad, especially if his Mom mysteriously dies.