I dropped my wireless speaker and it now rattles

I dropped my wireless speaker and when I move it up and down it sounds like something is freely moving up and down, and it makes a rattle sound. The speaker itself does turn on and plays a little sound, but the sound is 1/10th of what it was. I opened up the bottom of the speaker and got passed the electronics, but I can't pull the speaker out of the housing. (It seems like it's glued in, even though there were screws to remove)

The wireless speaker: http://www.amazon.com/Bem-HL2739-Speaker...

Links to picture: http://imgur.com/a/XFwon

The circular part of the speaker shown in the pictures is what the thing that is loose inside the speaker hits when it "rattles". I think this might be the speaker core. Any advice on how to remove the speaker?