Savannah Super Cat
Do you know if a cat lived in your new place before you? Maybe that cat peed on the carpet and Titus smells it. You might consider changing the carpet and padding if you're able. If not, buy a boatload of Anti Icky Poo and drench the carpet all the way through the padding and then clean it.
Maybe he needs more than 1 litter box, especially if the one he has isn't located in a quiet private space. There could also be a stray cat outside the house/apartment that is disturbing him.
Frequent moves can take a toll on a species that doesn't like change. Try a phone consult with Marilyn Krieger http://www.thecatcoach.com/ She can help narrow down whether environmental factors are responsible for the behavior change and suggest ways to stop it.
I know he hates new things. . Ill order the icky poo, i had never heard of it before. Maybe the cleaners I've used weren't strong enough to clean away the smell for a kitty's nose.
If that fails ill give her a call.