What a shame, I really liked this pen, was working on the nib because it seemed crooked and misaligned...
Can I fix the feed or find a replacement one or is this thing dead?
Those are probably commodity components. A surprising number of pens are made out of them. If you figure out what kind of cartridge that takes and what the diameter and length are you can probably buy a replacement feed from any of the myriad pen places on the internet. You should be able to push the busted remainder of the feed to the rear out of the grip section. These are usually just a friction fit along with the nib.
Just to throw an example out there, assuming that is a #6 (i.e. 6mm) nib, which is probably the most common size, here are some random Jinhao replacement #6 feeds.
Edit to add: Gluing it back together is unlikely to work very well. It'd be difficult to keep the ink channel straight, unblocked, and not leaky. The passages in these for ink are quite small and rely on capillary action to work properly, and that's easy to disrupt.
