Stuck!

I was wandering in the nether and came across a nether portal and decided to see what part of the map I could end up on. I took the portal and was transported into someone's base where the nether portal was completely blocked. Because I cannot leave the portal, I cannot leave, nor can I use any commands such as /home or even talk.

Please send a staff member to send me to spawn or something, I enjoy the server but have not been able to play for the past few days. I cannot do anything to kill my character either.