After a hard reset do the soft reset . Once it boots back up run
nueExtROM and unlock your EXrom. You will unlock another 10mb or readable/writable space.
Then go in there and save the cabs you want and install them manually. I only use one in WM 6.1 the "IOTA".
If your useing 6.1 you will have to install the SprintTv from the EXrom once to follow the link and DL the cab.
Save it to your SD card rather than running it. Once you do that next time you wont have to install the SprintTv from the EXrom you'll already have the cab.
Once you've copied them (cabs you wanted) to your SD card or PPC delete all the apps in the EXrom and install some apps in it like "google maps" or "live search".
Some Apps must be installed in the device ie:HTC 6 tab plugin/ect or they will not work properly but a lot can go in your EXrom.
Its easy to get the EXrom back if you need to after deleting it. All you have to do is reflash a stock rom or DL the EXrom contents from the FTP.