If you want to wrestle the system a bit, find a open port you can run SSH through, set up a SSH server at home (i.e a very small linux server to use as a proxy, via i.e vmware if you dont have a physical server around).
Open a SSH session, and allow tunneling, then you can use a fair few different freeware programs to open whatever software you want unblocked, and redirect its traffic through the ssh tunnel.
Think Proxofier allows you to route full programs through a specific SOCKS/HTTP tunnel.
-edit-
This would allow you to run mstsc (Microsoft's RDP software) as well.