1.Find an open window.
2.Lift German Shepherds up and through the window.
3.Stand back and watch squatters exit bloody and screaming.
I like it.
As an alternative, since his name is on the title, the owner should call every utility -— water, electric, telephone -— and tell them the house is being renovated (true) and that all of those items need to be shut off for an indeterminate time due to the complexity of the repairs.