leaving wash on yeast bed

[cotton mouth Samson]

I was wondering how long you can leave a wash on its yeast bed after fermentation stops I am curious if it will cause any off flavors in the final run birdwatchers particularly my first wash finished about 2 weeks ago and I haven't been able to rack it off into another carboy but when it finished I moved it to the shop where it's been about 15 to 40degrees fer en height