Flat tire - broken jack holder

[DinanX5]

Got my first flat in the X5... Somehow I picked up a really nasty looking nail that caused a 'slow' leak.
The good news is that the tire pressure monitoring system did it's job, and the spare tire compartment design is a real low back-saver! The bad news is that the little rubber/plastic piece that holds the jack in place broke off at it's left attachment point. (Apparently the strap for the spare tire sled was wrapped behind it, and removing the tire pulled it hard enough to break it)
So, as a result, I have two questions:

1) Does anyone know if the little jack holder piece is a replaceable part?
2) Is it worth taking the tire to a shop to 'plug' the nail hole, or should I just get some fix-a-flat and do it myself?

Thanks,