I could understand if they were changing DNS registrars, there might be some propagation delay and they should plan it well ahead. They are still with GoDaddy.

So this seems like sheer negligence on their part.

whois snip --
Created on: 01-Apr-05
Expires on: 01-Apr-13
Last Updated on: 02-Apr-12

They renewed it for a year on Apr 2. Hopefully this doesnt repeat next year!!