I doubt Mojave is in there because that particular BEL complex morph removes a lot of the bottom part of side pattern, but there is a good chance if the breeder works with Mojave, they also work with other BEL morphs. No way to know for sure though what was the pairing was based on other animals that may not even be siblings or half siblings.
If I were to purchase him the first thin I'd pair him with would be some BEL complex morph to test that theory out and see if I got any BELs.