So you're saying if I enter your house lawfully, but then you eject me and I simply refuse to leave, making no other threat, you can lawfully shoot me?
I'd love to see the state law that says that. If so, it means I could lure a dozen people into my house, kill them all and say "hey, they were here unlawfully!" and get off scott free. Pretty sure castle doctrine doesn't work that way.
Then you would not be in my house unlawfully initially. If you did not leave, I could threaten you with a weapon to make you leave as you are now trespassing (this is specifically covered in my state's laws).
god I love my state.