Anyway back to the point.. playing with this stuff tends to brick your box real quick. basically the lot of them are too invasive and over bloated with addtional power features while neglecting the basics... On several of my trials i lost the unity dash and menu-bars here is how i was restoring it.
Punch ctrl+alt+f1 if you cant get a terminal(might be safer to do it here anyway) then run
unity --reset sudo restart lightdmPunch ctrl+alt+f7 to jump back to the GUI interface and watch/check the restart..
May take 1 or 2 tries and its a little slow and sometimes get stuck doing the --reset.