This same thing happened to mine. I went through all of the stalks and some of them were just stuck in the bean plants that they blew into and went right back up into place when I pulled them up. The others, I used ties and tied them to a stronger stalk on either side. It wasn't easy because you have to be careful not to put the ties where the new stalks are forming. Still, if we lose a stalk or two no big deal because we have at least 40 stalks. I am a new gardener, but someone with a lot more experience told me that yes, I should try and prop them back up. I will try and remember to let you know how it goes now that I have tied them, just did it yesterday. I hope this helps a little. Good luck.

Normally they will pop right back up especially after another rain.