No, he throws the orbs (which are no more than metal balls) at Galen. They are simply blunt force.
The magic he used before made Galen's clothes more heavy, so that slows him down.
But the balls just do physical damage.

[img=http://ontdekdenhelder.files.wordpress.com/2011/08/p1010463.jpg]
This is what they look like, only with a foot of chain on them so he can sling them easily.