I never thought there was any guilt/self-disgust implied with schadenfreude... I always just used it as a term of taking pleasure in others' misfortune, period.
Also: dude, who left the fucking treadmill going and walked away? If it was guy that smashed his face in, good, he deserved it. That is super dangerous. (If it wasn't him, I hope they yelled at whoever DID do it).
(Edited to de-dude a bit)