Too new readline on FC8

["Peter J. Stieber" <developer@xxxxxxxxx>]

Somehow I managed to load readline-5.2-9.fc8.x86_64 on my Fedora 8 box. 
 It seems to be newer than any version currently available from the 
standard mirrors (readline-5.2-7.fc8).  I only point to standard 
mirrors.  Maybe this newer version was temporarily made available, then 
removed.

This is probably a stupid question, but how do I replace the *-9 version 
with the -7 version using yum?

Is it...

yum install [some kind of force option] readline-5.2-7.fc8

Thanks,
Pete