I have also shot figure skating events with the MkII on a 60D and learned that the 60D is a bit lacking in the focus tracking department. Roughly 20% of my shots were OOF. With the 7D, less than 5% are OOF.
that's about my experience...I used the same combo for a few skating shows, perhaps about a 70-80% keeper rate at the last show I went to. However, even out of the "keepers", many were not sharp, but remained usable after some PP sharpening in-house. I like to shoot in RAW so I don't fire bursts, but instead try to predict when the skater(s) do moves and time the shot right.
I have to say, though, that exceeded my expectations of the 60D AF. I still missed a few shots, but once I improved my technique a bit (faster shutter speeds, better/longer tracking) I was pleasantly surprised at the turnout. Still, a better AF system would really be nice...I guess I have one now in the 5D, with the caveat of loss of reach...
______________
Regarding the OP's shots, definitely need a faster shutter speed...but even then, it should not be THAT blurry. For sports one really has to use Servo mode, hold the camera firm and track the subject(s) one is interested in shooting. I've learned through experience that typically you can't just pick up the camera, point and shoot and hope for a sharp shot...