Opening up the 6950 is a pain! Esp. the backplate. Then we have the front. I'd leave it at that for the time being. Will definitely replace it in the future.
I did that for the couple of 4850s as soon as I reached home, when I got back from the trip abroad.
Those are nice temps for the reference cooler design.
The OP's temps are inexcusable for a non reference design. There must be something seriously wrong with the card to hit 103 deg with an UT3 Engine game. I would strongly recommend that he get the card RMA'ed immediately.
My MSI 6950 Twin Frozr II's in Crossfire mode hit 69 deg load temp after overclocking to 900MHz/1300MHz. Mind you this is in crossfire mode. With a single card installed, the temps are much much lower.
Opening up the 6950 is a pain! Esp. the backplate. Then we have the front. I'd leave it at that for the time being. Will definitely replace it in the future.
I did that for the couple of 4850s as soon as I reached home, when I got back from the trip abroad.
I don't think you've to do anything with the front of the card. I removed the backplate and took off the front - the entire hsf unit to expose the core. Should it not be the same for your card as well? :S
But removing the cooler and the top cover was impossible in mine :|