Unlike the broken yumex-0.44-1.0.c4.noarch.rpm removed from the testing repo a month or so ago, this one seems functional. There are quite a few messages to stdout but nothing fatal. Tried repo configuration changes, package install/remove/update, and preference changes on package removal after install and everything seemed to work.
For your information, yumex-0.42-9.0.SL.noarch.rpm from Scientific Linux for 4.2 works so far.