So you won't be going to race the Dakar in 2012, (I'm very disappointed for you about that, we were looking forward to following you) but that might not actually be that bad a thing really. Come 2013 your leg will be much stronger, and your motivation will be through the roof.
With that in mind, you won't be racing Dakar next year, but is there anything to stop you from going along as a support crew for someone? Good chance to get more experience there, make some contacts, possibly drum up some sponsors, still be a part of the whole thing?
And yes, hit up the mountain bike. Bikes are good