Paul, your case is almost similar to my dad's. He had SCC on Left Tongue - went for Operation, Chemo-Rad (Cis x 6 wk + 60 gy rad) first time and had all clear PET in 2009.

He got second recurrence in 2011, went for TPF (induction chemo) but it failed to shrink tumor on his right neck node. Went for radical surgery but no clear margins so he went for another 60Gy of radiation on right side only.

Another PET after 3 months showed persistent tumor and a new recurrence in neck level V. He was on Gefitnib 250 mg till his death (26 May 2012) due to cardio-respiratory issues and blocked right carotid artery due to radiation. He did not die of cancer but the treatment took toll of his body.

If you decide to go for IMRT, you will have a very hard time. Discuss the odds of surviving just on Erbitux with your Medical oncologist. With agressive treatment you may increase the quantity of life but at the cost of quality - A very hard decision to make.

I am just speaking out my mind, apologies if I have overstepped.