Most of the fireworks finish on the 4th September :( but there is Mickey’s Magical Fireworks & Bonfire, which is a special event on the 2nd, 4th and 7th November 2011.
I have found out some information for you :)
Disney's Bonfire Spectacular
Everyone in the family will want to catch this amazing extravaganza. Watch in wonder as the night sky above Lake Disney lights up in an eye-popping explosion of fireworks, special effects and music. Add to all this drama and excitement, a spectacular bonfire and a special appearance by Mickey Mouse himself, and it’s easy to see why everyone of every age absolutely loves this incredible event.
The fireworks extravaganza is around Lake Disney! This will be a bonfire night of a lifetime with a dramatic fireworks show, enthralling music, incredible special effects and a gigantic, floating bonfire on Lake Disney.
The fireworks shows are on certain dates and can be modified, delayed or cancelled without prior notice, notably in case of inclement weather