In the end, Ted being alive but seriously hurt was the best way to get out of the "Ted Situation". If he died, that would be a whole other loose string storyline that, IMO....would slow down these final episodes. Ted's hurt, scared and afraid for his family. He's done in the show.
The greatness of this show is the web of pressure between characters all at once. It would be a shame if they only had Ted live to not have a loose end from a previous season. Walt is in a relatively safe place right now. He needs new pressure from several angles for the show to be strong this season. I bet Ted does something like extortion to apply pressure on Skyler and Walt.
For all intents and purposes,
Ted thinks he was accosted and almost killed by a couple of gangsters. Why would he think any threat of extortion would keep him safe?.....In addition, he doesn't really known enough about Walts operation to go to the Feds in an attempt to give them something in return for lenience on his problem with them. He's kind of out there on his own.
I took a lot of finality from that scene. Skylar's transformation from blubbering to "Good" told me it was over.
The great part about it is that we'll have 15 episodes to find out if I'm wrong.....and if I am.....then I have enough confidence in these writers that they'll set it up in a way that I will find interesting.