I’m trying to help my brother-in-law get his car back together. We need help

Car: 2003 Camry

Issue: everything rear passenger wheel bearing (#2). it’s stuck in part #5. Its a bit rusty having spent the last 15 years covered in New England salt.

We took the whole brake assembly apart and took it off the car so all that remains is parts 2 & 5. They will not separate and we have a small concern that part #5 may have bent during the beating of #2.

we have part #2 but not part #5. (we also need part #8 which we can;t find either) 8 has been located.

Should we continue on and just have a machine shop press the two apart?

where else could we find the part. (zip code 02339)