Sumbitch. Good news is that pulling the half-shaft is a relatively quick job. Obviously this is just a picture-based e-diagnosis but it just looks like the Ujoint is boned, doesn't look like it did anything to the unit bearing - usually a D30 will chew up yoke ears before it hurts the hub. If the hub is OK you can do a trail repair by splitting the axle, reinstalling the outer stub shaft in the unit bearing, and stuffing a rag in the axle tube - but I suspect you don't have a 36mm socket and a 13mm 12-point onboard.
Probably a good indicator it's time to have a look in the junkyards for a set of 297x axles, yours look like the smaller 260x joints.