Thanks for the video... we know that ferrari had started the season with the FOOT OPERATED version, and that from some videos of Massa you can see he is still using it...
But by looking at THIS video
http://www.youtube.com/watch?v=2FeLbfBNtYQ
AT 00:40 OPEN first DRS ZONE but the movement of the left hand here can barely be seen
AT 00:48 CLOSE end of first DRS ZONE the movement from the left hand is clear, he is releasing something
AT 01:22 OPEN
AT 01:24 CLOSE
AT 01:25 OPEN
AT 01:26 CLOSE Fernando is kinda "trying" the DRS activator ....and if you watch the DRS green light on the graphics together with his left hand you can clearly see (expecially from 1:22) how every single time the light switches his left hand presses or releases the BACK LEFT SIDE of the weel ... it's so clear