IMHO: In the brave, new world of advanced stats, I don't believe any manager has a lineup forced upon him. At least I haven't hear of that happening. He is provided with the information, that's it. Now, if the manager's lineup isn't producing, then I'd speculate that, if he's not following/using the info provided, that would be a reason for termination. Having said that, I also don't believe any manager completely turns his back on the info provided.