The login problem is because Bryon had to nuke your account in order to make the sign-up work. However, there is an IP filter to prevent multiple sign-ups from the same IP address in a short period of time (people signing up for several accounts quickly are usually up to no good). It's not connected directly to your email address, etc., and would need to have been cleared manually from a large log of IP addresses (a fellow could go cross-eyed trying it). The IP address hold will clear itself automatically, so you should be able to sign up again tomorrow.
(Do note, though, that if you and a bunch of your friends all try to sign up from the same local area network/public hotspot, only the first in would be able to sign up on any given day, since as far as the internet is concerned you would all have the same IP address. Only the local router would know you have different local IP addresses.)