Gardener's droop?

I didn't even go looking for this one, the broad bean plant gave it to me on a plate:

Broad bean plants have to be strong, these pods certainly demand support. This year and last, the first few weeks seemed normal with my broad bean plants growing straight up with strong stems. Then, come May they lose the plot and go off in all sorts of directions. A combination of wind and a disappearing gardener probably doesn't help, but i did try and support them this year with canes at the end of each row and string to hold them in place. I just forgot to keep adding string the higher they went!

This can lead to weird and wonderful structures, but it can't help efficient bean growth. Does anyone have photos of how broad bean plants should look rather than my twisted versions?