Stealth Bombing

Is commonly mistaken for when someone has done a silent yet incredibly bad smelling trump. however means when someone has "dropped off the radar" or in other words is unable to be contacted due to them appearing to be excluding a group of people for an unknown reason, be it due to an argument or the person in question having just changed. etc.

Dave: Colin you heard from John recently??
Colin: No mate hes been ignoring my texts... looks like he's stealth bombing us at the moment..