HI Mark.
It would be very hard to remove easily with out removing the air filter cover and it's box from the top, as the air box is part of the cam cover, and to remove that the injectors have to be removed as well, having said that it may be possible just about to remove it but it would be a struggle, I am almost certain you can remove it from under the car but you may have to lower the exhaust pipe also, don't quote me on it though, today I had to remove some item from a R40 so took the opportunity to take some photo of what you are up against trying to remove it from the top pics below, hopefully they may help with a plan to tackle it ?
I am again almost sure you can purchase just the concertina part of the pipe and have it welded or soldered back into position, remove or peel back the heat guard sock and take a look if you have one in situ Arctic.