Lock / sleep button ribbon cut

Hi there,

All of a sudden my lock button got really hard to push, I went to YouTube and found a video of a quick and homemade repair. You may have seen it, the one with the little bit of paper put between the button and the black ribbon. Unfortunately me being me... I accidentally snipped the black ribbon. Doh! So I quess what I'm asking is have I well and truly broke my button now? And is there inexpensive fix?

Thanks for taking the time to read this and I would really appreciate your answers.