I have found that the Fractional T1 CSU/DSU modules will work in 1600, 1700, 2600, 2700, and 3700. Can I use the same WIC from these in a 2524?
Yeah, I would not recommend trying that.
You can pick up a (authentic) WIC1DSU-T1 relatively inexpensively. I've seen them as cheap as $30 at some shops. Do *not* pick up the -v2. Those are only for use in the ISRs, and no the 1600/1700 series.
Have you tried the password recovery procedures? You need a downtime, but it may not be a big deal if you can recover the pw: http://www.cisco.com/en/US/docs/routers/access/2500/2524/software/user/guide/boamnt.html#wp774