Harley did that a couple of times as well, you have to keep a eye on them, if they stop going to the loo and don't bring it back up you need to get them to the vets as the sock will start to rot in the animals stomach.
My dog chewed loads of stuff when he was a puppy, he did grow out of it tho. However, if he feels that he is not getting enough attention he will be really naughty and sometimes chews things then, not shoes or anything, he usually steals from the bin and shreds paper!! He really is like a little child!!
Tony....he is insured with pet plan i used to work at a vets as well so my boss is good about giving me discounts when he was neutered it only cost me £30
You could always wait for it to pass through the other end Nat then take both halves to the bank . The bright side to this is that cleaning up after Jarvis will be easy as it's going to come out ready wrapped.