I currently have a DROID Bionic and I gave my son a HTC Rezound for his birthday today. I wanted the phone to have a few apps and a few tweaks so I signed in with my Google account and went to the Play Store. After he opened it and added his Google account I was unable to remove mine. I have done a few Google searches and I can't figure it out unless I do a factory reset. Is that really the only way to do it?