Console Error Connecting to Minecraft Servers

http://pastebin.com/VgRTgRNK << This is the link to the full console output. My friend and I were doing some survival with the plugins that loaded. During the gameplay, the server stopped running and spammed the server about 50 times with an ArrayIndexOutOfBoundsException. We can not join the server, restarting does not work (both the server, and the whole computer).

I have also received two separate errors. One was an IOException about a "broken pipe", another was a java.lang exception. The message for the latter was "bll cannot be cast to fv"?

Any help is appreciated