Small icy trans-neptune object in high ecliptic, very eccentric orbit, counter directional orbit. So it was captured from inter-galactic space? I mainly like t

Small icy trans-neptune object in high ecliptic, very eccentric orbit, counter directional orbit. So it was captured from inter-galactic space? I mainly like this theory because it'll force Bayesian Astronomers to re-calculate the density of inter-galactic planetoids. I guess we can discuss multiple Neptune/Uranus like ice giants orbiting at the fringes of the Sun's gravity. But wouldn't that seem to violate Occam's Razor?