This may or may not be an ice related accident.. time will tell. But that said, all pilots, especially turbo-prop pilots should be made aware of the difference between a conventional wing stall caused by ice accretion and a tail stall caused by ice accretion. The tail can normally be considered to suffer greater ice accretion due to it's shape and the the recovery for a tail stall is the complete opposit to that required for a wing stall; ie. pull back on the column and maybe even (depending on the a/c type) decrease power. Mis-identification of the stall could be lethal.