Hi, And welcome to the Android Forums
Hope you enjoy your stay here
Also , regarding , the proper place to post ,
taking for granted your device is optimus net and is rooted this is a proper place
Regarding the problem,
in root environment , device must be played in a careful way
but this problem seems to be one which can be solved as u have recovery installed !!
You should have not frozen the default launcher as it is not in memory the point you use a 3rd party launcher
also, as far the solution is concerned ,
I think the problem can be solved in many different ways !
but ya i think the problem has 100% solution
If you have a ADB setup done, just install any launcher via adb
"ADB INSTALL path/to/launcher.apk"
if not do let us know,
We can create a zip package that installs a launcher in ur system !!