Sam's [executioner's slash] was drawing ever closer to rending Frost apart, the massive great sword was deadly enough, now with the red energy surrounding it, it'd likely cleave through him without resistance.
Frost's brain was firing on all cylinders and finally came up with a solution, using his glaive as an anchor point. He couldn't move the way he wished in mid-air and his feet couldn't reach the ground, but his glaive could. Knocking the butt upwards the glaive blade met the icy floor. The moment it did Frost placed his entire weight on his weapon and used it as a vault. He wasn't worried about snapping the shaft given that it was made of sturdy 3 star materials.
With nimble movement Frost moved his body backwards out of the great sword's path before raising himself up high.