I think two new inboard halfshafts are in order, for the front axle! Both had inboard end damage, one being twisted and the other twisted right off completely. That answers some questions! Have ordered new ones....
The good news is that the stub shafts are in good shape, as are the universal joints. Have ordered two new Hardy Spicer uj's, however, as the swivel housing clearly hasn't had any oil in it for quite a while, and I can't be sure in what shape everything is inside the bearing caps.
Here's a view of the swivel housing opened up. The remains of the oil that was once in there can be seen, in a sort of droplet form. It comes right off, and there doesn't appear to be too much corrosion, but new swivel balls and Timken swivel bearings are going in there in any case.
You can't see it here, but with proper light it's possible to see the twisted off end of the halfshaft still in it's receiver end. We'll see what's up when the differential is removed. Here, you can see the outer race of the halfshaft bearing at the entrance to the axle tunnel. The gunk at the very bottom is just road grime yet to be cleaned off, with a bit of oil mixed in.
Stub axles are a mixed bag. One is clearly just fine, the spacer is in good shape as well. The other has some surface corrosion. I'll consult with those who know more than I do, and perhaps one or both will be replaced - although it would be nice to be able to keep them both.
A closer view of the corroded stub shaft. The non-corroded areas were under the hub bearing inner races.