Can't connect to my own server - inventory bug?

[Essix]

Title: Can't connect to my own server - inventory bug?

Version: 3.0.3/3.0.4

OS: Windows Vista 64-bit

Java Version: 7

Description of Problem:

I was doing some mining with my destruction catalyst and noticed that the EMC cost wasn't subtracted from the stack of glowstone in my inventory until I attempted to move it. I didn't think anything of it until I accidentally hit R (autosort) and Minecraft crashed. Now whenever I try to log into my Tekkit server Minecraft freezes and stops responding. I have to assume something happened with the autosort feature related to the delayed item removal from the stack I mentioned before. I have no clue how to fix it, since I can't actually log into the server.

Error Messages:

Error Log:

[Torezu]

Assuming your inventory is corrupted, deleting your player.dat will probably solve the problem. You'll just have to NEI all your stuff back in, though the contents of any bags you were carrying should be fine. I'd just use a klein start in the future.