I'm fairly sure that here in the UK, if the situation went to small claims court than the retailer would have to prove that it has been misused, which in almost all cases, I doubt they would be able to.
I experienced this before when I took Curry's to small claims court over an Asus Transformer tablet. A (very) long story short, there was a white spot about the size of a 50p in the middle of the screen and Asus tried to say I caused it by 'misuse'. Bear in mind this white spot was behind the glass, of which there was absolutely no damage to.
Curry's did try more or less begging Asus to repair it (I heard them on the phone) but they still refused to repair it. I ended up having to take Curry's (the retailer) to small claims court and it was a straightforward victory for me. They had to pay the brand new retail cost of the unit which was nearly out of warranty and also the court fees which I believe were around £50 in total. I've never touched another Asus product since and I don't intend to.
The point of this story is, if you do go down the small claims court road and you have to present the evidence (in this case, the OLED TV), make sure it is in immaculate condition and not covered in dust/fingerprints etc. If this is the case then I have no idea how they can play the 'misuse' card.
Just to check did they refund the full value of the original purchase price? I would have expected the court to have made a deduction for the use you had from the unit before the damage but if they didn't then good for you.