you can grab pedward3x's stock deodex ROM here
http://minus.com/muGOpyvbl and extract it. it should have it (its not debloated)
Thanks a lot!, it worked perfect got the app working again...
Just in case someone else needs this sometime .. here is what I did:
1) Deleted everything that had to do with the Backup Assistant
- /system/app/BackupAssistantClient.apk
- /system/app/BackupAssistantClient.odex
- /system/app/BuaContactAdapter.apk
- /system/app/BuaContactAdapter.odex
- /data/data/com.motorola.BackupAssistanceClient
- /data/data/com.motorola.android.buacontactadapter
2) Deleted dalvik-cache with TiBu (don't think it's necessary, but just in case)
3) Pushed BackupAssistanceClient.apk and BuaContactAdapter.apk to /mnt/sdcard
4) Copied those files from /mnt/sdcard to /system/app
5) Changed permissions with busybox chmod u+rw-x,g+r-wx,o+r-wx <filename>.apk (did it on both files)
6) Rebooted phone.