I got to the Theatre in Dead Money earlier today and ran into the issue of having to kill Dean Domino because of what I said to him way back when we first met.

This is a little mod I've thrown together that gives a pathway to turn his opinion of you around while backstage. You just need to have found the Vera blackmail tape, found out about Vera's medical condition (from the Suites), and have intelligence of at least 6. It uses bits of Dean's dialogue (no dialogue should be repeated), and you shouldn't really notice anything out of place.

http://www.newvegasnexus.com/downloads/file.php?id=44653

Uploaded an updated version that cleaned up the esp a little.

Also uploaded an alternate nonsense version that adds a dialogue option (to give Dean some non-existant flowers) that will make him like you no matter what skills you have, what items you have and what you have done before, in case people don't meet the requirements of the normal version..