Chain stretched, any advice?

Shirt fell from my bag into the wheel, got trapped between the sprocket and the chain, and by the time I stopped the chain was out of the sprocket. The wheel did not move, so basically the chain got stretched quite a bit.
Other than the chain now being quite loose, it seems like the rest is fine. How evenly it stretched or whether it got twisted at some point, I have no idea. What should I do? move the wheel back and keep riding? Replace the chain (it's fairly new)?
What happens when the wheel is all the way near the end of the dropouts so you can't tense the chain further?
Any advice appreciated.

it sounds weird that your chain stretched, i would have said the wheel got pulled further forward,
as to the dropouts, shorten the chain by 2 links.

The wheel moved. Move it back.
If it wont go back far enough, please be removing clothes or chain links.

is the tshirt made of steel? chain stretches just a few mm's over 1000s of kms. doubt it would stretch due to something getting stuck onto it. unless one link's dangerously loose or broken? check

that said, as chains on fixed have forces goin 'both ways' am i right to assume its stretches in half the time (or less) when compared to geared? and half the service life?

Chains don't "stretch" as such, the friction wears out the touching surfaces and they get longer.. something like that

http://www.sheldonbrown.com/brandt/chain-care.html

"Riders often speak of "chain stretch" a technically misleading and incorrect term. Chains do not stretch, in the dictionary sense, by elongating the metal by tension. Chains lengthen because their hinge pins and sleeves wear. Chain wear is caused almost exclusively by road grit that enters the chain when it is oiled. Grit adheres to the outside of chains in the ugly black stuff that can get on ones leg, but external grime has little functional effect, being on the outside where it does the chain no harm."

your chain wont stretch, it will destroy the garment in preference :(

get a nu one

get an unstretcher, from wiggle :p

Washing the chain on a 60° setting should sort that right out. Do not include softener, iron on medium.

good point. What should I use to clean my drivetrain? Anyone able to give me a little walkthrough?

Cloth soaked in WD40, run grab chain with cloth, and run your drivetrain., Then re-lube. Leave it overnight, then give the chain a quick rub down with WD40 cloth to take off the excess.

BE VERY CAREFUL OF YOUR FINGERS.

Obligatory nasty finger pic:

[size=30]+1

BE VERY CAREFUL OF YOUR FINGERS.[/size]

The Reverend Sheldon B The other danger of fixed-gear bicycles is at its greatest when the bike is in a repair stand. If you hand-pedal it and then accidentally have a finger an article of clothing come into contact with the chain or a sprocket, the momentum of the wheel will keep the drive train rolling. You can lose a finger that way.

mashton Obligatory nasty finger pic:

Dinner?