Caspus IV's weapon was suddenly in his opponent's shield, adding their weights rogether onto his one arm.
He saw an incoming spear thrust aimed low and crouched, having the spear glance off his shield and nick Caspus in the ear. "Ack that smarts." He growled. 

He then turned his entire torso into a spin, and slung his spear(still having a shield on the end) at his opponent, the spin having built momentum for him. As soon as his spear left his hand in the sideways-throw he lunged forward in a tackle, his shield covering him, turning it into a full-body-and-shield-bash.