I don't believe so. Even though fermentation may be complete, the yeast will still be able to clean up the diacetyl. Give it a few more days.
Brody's Brew House
Primary: American Pale Ale, Coffee Porter(
Seconary: Don't use one, generally
Planned: Either a brown ale or a Scottish Strong Ale
"For a quart of ale is a dish for a king." - Shakespeare