Just get rid of it all. I pulled my EGR with the Plenum off and Battery out, wasn't really THAT difficult, took a couple of hours altogether. I bought a stubby spanner (12mm I think?) from supercheap to undo all the bolts where the long EGR pipes to the plenum connect with the EGR. None of these bolts were overly tight on my car so they came off pretty easy. The Hard part was the large nut on the Exhaust manifold. I drowned it in WD40 and with the battery out managed to get it undone with a large shifter after much swearing and skinned knuckles. Some people cut the pipe at the nut and put a socket over the nut, this should work too. I then unbolted the EGR from the lower plenum and pulled it straight out the top with the Pipe to the manifold still attached to the valve. Also I had to remove one of the metal hard pipes that the heater hoses attach to to give room to get the valve out.