Q understands how Twitter card images works, that's why he linked to the code sample showing how the image cache can be manually busted. This was a clear message to Obama's cronies.
[Weapon] Cache(s)=busted.
DC secure.
>57e4d77d
Just trying to read between the lines. "Clear caches" is a common idiom in web-dev, which is related to the updated twitter image (caches cleared) which seems to be what Q was insinuating.