http://insidetv.ew.com/2014/09/25/big-bang-theory-mondays/

The two-episode “Big Bang Theory” block has been expanded to each of the next three Mondays. As a result, “Mom” will air on Thursdays this fall, premiering Oct. 30, and “The Millers” will be moved to Mondays, starting Oct. 20. But beginning in January, “The Millers” will move back to Thursdays and “Mom” will be back on Mondays.
Read more at http://www.hitfix.com/tv-tattle#Yt1ZZZHPHgPiox7y.99

so they are just going to burn them off then?

probably a bad sign for the future of the show...

All the stupid switching back and forth is not good for ratings people won't tune in if they can't find the show on the night it is usually shown.