[yorkietalkjilly]

Dogs pee for many reasons and relieving stress, anxiety, fear, frustration, excitement, marking territory and possessiveness, dominance and deep respect are some of them. But they usually do things like isolate themselves, shun you or growl, show teeth or bite when they are angry at you. He could have heard a sound, smelled a scent from outside or something like that happened that worried him and he just relieved his stress in the place that best served his interests right then because he didn't know what else to do.

You want him to like going to his pee pad, not fear or recoil from it for being made to stay there for a reason he couldn't possibly understand and will just increase any stress or anxiety that might be causing his peeing by his bowls. I would try to undo that punishment session in his mnd by taking him to the pee pad a few times and happily treating him for voluntarily walking onto it, saying "Good pee pad" or "Good potty", etc., clapping happily and acting happy with him even if he doesn't pee - but just to restore walking onto the pee pad as a desirable thing to do in his mind.

He's ignoring you because he senses he did something wrong and you are unhappy with him and he doesn't know what to do. I'd start a roaring play session and run and chase him, toss a ball and get him playing and happy with me again, tossing him the occasional treat and smiling, petting him frequently.