Got the device back, _exactly_ how it was on Wednesday... Splendidly working, lost the hell of changes made afterwords, when handed over the device to my wife - and all of her customizations ever-since... and to think that all these happened because her own samsung got stolen on that day!
Shouldn't have tried to accomplish everything perfectly, in order and at once, if there must be a small piece of extracted knowledge from the incident... and that sh*#t happens!
Thanks everybody.
use the net
enjoy the silence
Nexus 5 Stock/Root/XPosed/GravityBox