More info here: http://www.reddit.com/r/spacex/comments/2kghua/falcon9r_boostback_question/ http://www.reddit.com/r/spacex/comments/2kghua/falcon9r_boos... It

More info here: http://www.reddit.com/r/spacex/comments/2kghua/falcon9r_boostback_question/ http://www.reddit.com/r/spacex/comments/2kghua/falcon9r_boos... It looks like they indeed perform a u-turn, with the proviso that some of the return is accomplished by pushing higher, increasing orbital period, and waiting for the earth to rotate underneath.