Once an HTML document has a manifest (cache.manifest), how can you remove it?

Question

It seems that once you have a manifest entry, a la:

Then that page (the master entry in the cache) wil

Answer 1

One possible solution:

• modify the manifest (so it reloads)
• modify the master file (index.html) to reference a non-existant manifest, so it gets a 404

Hardly elegant, but it seems to work. The main problem then is that you're stuck with this 404-generating false manifest entry until everyone who has ever been to your site has returned and had their cache cleared.

There has got to be a better way...