ben4637858 wrote an answer about Dynafit TLT Radical ST Binding on December 13, 2011
To be frank, if you were simply making turns down a slope and the toe released on you, this is most likely user error. A lot of people have issues with there being ice/snow in the sockets on the boot as well as underneath the toe piece on the binding which prevents it from fully engaging. If you have a clear connection from your boot to the toe pins, your DIN is set correctly, and you're not hucking a 20 foot cliff onto hardpack, you should not come out of either STs or Radicals. Like Sandy suggested, clear out your sockets by cycling your boot with the toe engaged and also be sure to clear any snow from under the springs on the toe.