I seem to remember that "Black Jack" is considered a "dwarf-type" tree, that has a tendency to grow horizontal branches...wider than tall? Maybe it's the nature of the plant's habit to sprawl a bit.
Maybe others can post some photos of "Black Jack" and see how yours measures up against the type.
And, for what it's worth, when a branch, or stem, doesn't "do" what I want it to do...I have a supply of vinyl coated #12 copper wire, and I wrap the wire around branch...bonsai style...then bend the branch into a new, more pleasing, position. (Note: Bend slowly over a few days...fig wood has a tendency to be brash, and will snap!). After growing a few months, the wood takes a set, and the wire is then unwrapped, or cut off...and, Voila!....the branch is under my control. : ) I often tell my trees to go "get bent"! : ))))))
Frank