I feel your pain... $hithead.... I mean little lord Scupper my spoiled house cat got out a couple weeks ago. Dad came by my house when I wasn't there to pick up a power tool I had borrowed and decided the latch on the door wasn't just right so he took the time to fix it. Of course he had to leave the door open while he worked on it and away went Scupper. Problem being Scupper is a spoiled indoor cat with very little street smarts.
Fortunately by day three at midnight he decided he had enough of the great outdoors and came knocking on the door... and ran straight past me to the water bowl.
I sure Bubba will also come to the realization of what a sweet deal he has at your place and return.