I think you just attempted rape and I don't want you to go anywhere and I'm drawing my weapon to see that you don't,"
The guy was happy to let him stay in his own house. The reason he followed him was because he was walking away.
fishing in his pockets? I'm trying to envision a scenario where, I have a weapon on me, and i'm searching for it like i'm trying to locate a tube of chapstick. I doubt it would take me more than two seconds to pull a pistol if that was my intention. I dont buy the shooter's story for a minute.
If the suspected rapist had made it back into the house...the police may not have been able to get him back out to arrest him, or to question him.