There's little to no friction in zero gravity, maybe that's the reason for speedforce to stop working. Then again, the time wraith should not be able to catch Thawne in space :)
I felt sorry for Rip, I too felt the whole situation was overplayed. But it trully got to me that Rip was not protesting... until Sara endangered Gideon. And it's true, he himself did place Gideon in front of a nuke but now that he saw her as a human, he's no longer that eager. He even used the term "human shield", if I remember correctly.
Still, I'm glad everything sort of returned to normal by the end.