Is this a major Y!A glitch or is it deliberate sabotage?

It would be a combination of both in my opinion. I've seen the posts you put in Tim's suggestion thread, it takes some initiative to do what you did. But if what you say is true, then you have my respect and support. I agree with you, if this is the work or someone or a group, they should get a life. Anyways, for the question, seems like hockey section almost came back to normal. I'm still getting glitches when I refresh on a page. Hopefully, it will be fixed soon.