Frank,
Do a search on "creeping figs" on the forum and you'll see a couple of exchanges about this, some from last autumn. There is some speculation that these may have been propagated via tissue culture. I'm working from memory here and paraphrasing very inexactly, but I think the notion was that the tissue culture plants tended to send out a lot of shoots and branches, and if there was no one shoot/branch that was an obvious dominant apical meristem with vertical growth, then all the shoots/branches would tend to splay out more or less horizontally. Some people thought that if you used a support and trained one shoot/branch to grow vertically, then the tree would start to grow more normally.
Jim