Is there a way to inject GoD format games into USB to be played on a retail/flashed console without corrupting it(or getting game is corrupted)?
not on retail or flashed jtag/rgh only as far as im aware m8 cos to take it from 1 console or another the PIRS/live package needs to be resigned to that console
No, there is no way of doing this on RETAIL, it doesn't matter if you download/use a profile that can bypass the DRM/Security on a RETAIL to play GOD/XBLA etc and so on you will lose online function regardless etc The only "proper" way of doing this is on a RGH/JTAG console where you can freely unlock GOD, XBLA and so on. So to answer this question, no, you can't do this on a retail as things like a license needs to be assigned to the console it is downloaded from if you purchased it from the Xbox store, only on a console that is RGH/JTAG can bypass all that technical garbage!
You're talking about gamesharing which used to be around on a different site. I believe people have stopped doing this because people would change the passwords on the accounts. You can still game share with people I just saw a thread about some people sharing games on the x1.