As a testament to my impartiality, I need to say that I have Torain and Helu, and had been carrying Hightower as well ever since Torain's outburst versus STL, but I digress... Helu will take over as the primary back at some point, whether due to performance or injury. I would not count on that being immediately though. The past 2 games during which Torain was a nonfactor had a lot to do with game situation. In the first, Hightower was inactive, but Torain got the vast majority of the work. There just wasn't a lot to go around with the Redskins being down 17-0 and then 20-0 pretty much right away. In a pass heavy gameplan, neither runner got anything done.
In this week's game, Hightower got pretty much all of the work in the first half and looked really good so he stayed in. Torain got the early down work when Hightower went down, with Helu getting the work on passing downs and in the hurry up offense, essentially just as he had with Hightower in the game throughout the season.
I like Torain to remain the early down back for at least the next few games, and the one with more fantasy potential. I would certainly not be dropping Torain in spite of his last couple of weeks. I would definitely be adding Helu though, and potentially selling high on Torain if he has a couple more good games.