To Run or Not to Run?

I used the kiniseo (spelling?) tape at the AIDS Run 10K this weekend and it made my shins hurt worse!  Usually it hurts for only the first couple of miles but this time it took 5 miles to get rid of the burning.  Boo.  At least my shins stopped hurting at the uphill parts so I ran past tons of people who were tired at that point.  So...do I sign up for the Carlsbad 1/2?  Eck.