But you can't type commands (or even open your inventory, or hit [ESC] to disconnect) while inside the portal.
@OP, have you tried just punching your way out? It will take a very, very long time to break the obsidian (4m10s, according to the wiki) without a diamond pick, but you can break it, eventually (unless it's protected by a worldguard plugin or whatever. Then you really are screwed.)
http://www.cowcraft.net/home <--- I made a post here asking for help yesterday, all I got was 3 dislikes and a kid saying that he is going to hack me because my email address was the default username. So I changed my username, changed my email address, deleted my post, called him an ass and left.
That's why I asked here instead.
I don't know if cowcraft has a contact us link?I will make another thread there neways, thanks.