Sansa storyline in season 5

I'm not the best around here, or anywhere LOL, at keeping track of all the exact spoilers and such, but I do recall lots of talk about either not seeing or not hearing much from Theon in the first four episodes?  Dialogue wise, anyway.  It seems a lot of the news and talk is about Sansa and LF and how that effects story in WF, with lots of trying to determine......how that will effect some of the books elements of Theon's story there.  That's my round about way of saying.....no, not much specific seems to be known about Theon himself and what will happen for him.  

I kinda feel that Sansa is able to "tame" Ramsay in the beginning, but thinks are going to spin out of control and Sansa will escape with Theon.

It's the same principle, really. The Winterfell Lords in the books are a bit miffed that they never see 'Arya' anymore because she is kept in her room. The lords are also hostile because of the Red Wedding and Frey presence; its a badly kept secret that Roose was involved. I mean, thousands slaughtered at the wedding and Roose just so happens to survive and be given powre? Yeah, sure Roose, you weren't involved at all... The Mountain Clans would of course still March with Stannis to save The Ned's Little Girl, even if it's a different daughter.
He doesn't need Sansa to work with him. He just needs the legitimacy that marriage to a Stark brings to the table. In fact, a real Stark works better than a fake one, because there is less chance of the whole plan falling through if someone realises and can prove she is fake.

I suppose he would also have a similar plan to Tywin: have Sansa produce a Stark heir (oh god please don't let her be pregnant) and then have her killed. He'd probably orchestrate an "accident".

Yeah, that's just one of the many reasons why this is dumb, but ah well. One of the spoilers says that Roose or LF acknowledges how having Sansa marry Ramsay might impact his relationship with the Lannisters. And then LF is called down to King's Landing by Cersei. LOL. I can't see how Cersei wouldn't know he had the she-wolf she thinks killed her son under his protection for so long by the time he gets there.

ITA, none of it makes much sense from any characters' perspective, but......it will be fun to watch some fans 

With LF giving Robin away to Royce I'd have thought he'd be doing everything to keep Sansa within his grasp and under his control, but he seems to be doing the total opposite and throwing away two of his most valuable pieces He has what he has because of the Lanniaters.

They can easily take it all away from him far easier than they can take anything from the Bolton's, but even the Boltons will have the North baying for them if its made very clear they no longer enjoy the crown's support. this marriage seems like its in no ones best interest except to just have Sansa in more ugly circumstances yet again.

"Your Grace, word has reached us that Ramsay Bolton, our supposed ally in the North, has we'd Sansa Stark. What should we do your Grace?" 
"...Sansa who? More wine!"

This is what I fear might happen