In WI, in addition to the "defective signal" thing, it's legal for a pedestrian to cross against a red light when the traffic clears. It's also legal for a cyclist to cross in a pedestrian crosswalk, as long as s/he doesn't restrict the right-of-way of any pedestrian, etc. So one trick a lot of cyclists do is pull up to the light, slide over to the crosswalk, wait for clear traffic and cross. You might be able to claim that that was your intent, but you just didn't get over far enough to be in the crosswalk.