Sure thing.Can you point me to this, Seamas?
A vertical buckle on the hull below C Deck suggests damage incurred due to a longitudinal bending moment...e.g....what's known as "hogging" .the bow hitting the sea bed first ... digging in then the rest, slowly settling onto the sea bed This would but the upper decks C, D and E in tension, and the lower decks in compression. Add to this a bulging outward force due to sea bed resistance and you have a recipe for side door failures. However, I would suspect the doors would simply spring but remain in situ.
Scroll three quarters of the way down until you come to the pic of the gangway door on the wreck. You'll find the relevant bit there. Here's the address again in case you need it - http://www.paullee.com/titanic/belowdecks.php
I'm not going to quote the whole article because I have a great a dislike of people who copy and paste entire articles (complete with graphics) and put them in ET posts. It's not the done thing in my opinion.