Broke my wire terminal

[UNIT 6639 0]

I broke one of the terminals on my BL 10" yesterday when I was pulling it out of its box. The tinsels are fine and the sub is still working perfectly. But the terminal is moving up and down!

I am thinking it is going to start vibrating once it gets moving! I dont know how Fi had it secured, I am thinking it was glued down, if so, what kind of glue should I use to reglue it?