Here is the loaf of bread from the one normal loaf pan:
And here are the other three loaves:
They're shaped exactly like loaves of bread! Hooray! But as you may or may not be able to see, the sides were not so much actually done. Still doughy, in fact. (On all of them, even the one in its own pan.)
So I separated them and put them back in the oven. They seem to have turned out fine (although we haven't actually sliced into one of these loaves yet).
The lesson for next time is to bake the kludgy ones just long enough for them to set, then separate the pans. I think that will help them cook a lot more evenly. Recommended!