Ive had this happen a lot because i supercrop all of my plants and sometimes i get a little rough with it but she likes it like that. If its not that bad, all you need is a tree branch. Stick it in the soil and hold it up where the joints meet. Id use the tape and the branch to factor in wind...
You can force it to flower. Just choose your time wisely. Lets say sun rise at 6am and set at 8:30 pm. Just buy a tarp or something that can cover your plant. Build a tent if u need to hold up the tarp. After you have done that. At 6pm cover your plant. Make sure the tarp is black or dark...
The leaf turning color could be from numerous things or conditions. From the look of it, i think it was because of the weather. When it gets cold for the certain strain it turns the leaf purple, but thats fine from what i can see.