Replying to Marker m11 free binding/ jacked me up

Hi everyone,
                     I need your insight, concerning these bindings. I am on my second set of markers on my Public Enemys. On my first pair of bindings (marker m12 titanium), my left ski released when I  landed from a highspeed kicker, it jacked me up bad, ended up messing up my collarbone and tearing a bunch of stuff. So fine whatever, got the m11 free binding mounted up end of last season, and yesterday I was cruising down a highspeed run popped a tiny jump onto the groomer and bam my left ski comes off and whips me into the snow again. So here I am, totaly worked, my knee and neck super sore. I got these bindings for their "air pad," thought the little rubber piece would soak up impacts a little. But now im pissed, for the second time these bindings have messed me up. Should I blame myself for not setting the din higher, or should I switch to a different binding? I had a shop set the din when they mounted the bindings based on my weight and expert rating. I dunno, what do you all think I should do? thanks.

binding pic link: http://shop.aspeneast.com/prodimg/MAR189.JPG