Not reading anyone elses reply (aside from one or two) so if I repeat anything already said, excuse me.
First, you should pot up. Do you need to? No. Should you for bigger/better yield and ease/convenience? Yes.
More soil = more moisture retention. That means watering less often, and using less food. More soil will also buffer your inputs better, meaning if you add a bit too much of something, or your pH wanders, it will harm your plant less in a larger volume of soil.
Second, bending/training your plants IS a good way to get more yield.. but the way you did it was kind of silly. You took a plant that was fairly well established, with a strong main stem, and bent it in half without much regard for why.
This almost reminds me of the southpark classic: Step 1: Bend Plant, Step 2: ?, Step 3: More Yield
You need to bend/move your plants with a purpose. Just randomly bending the plant over, while it isnt gonna ruin your grow (assuming the stem didnt snap/break), isnt exactly going to provide you with the benefits your looking for.
If your going to bend the main stem, you usually do it gradually so as not to break the stem open. If it's a young plant that is still pliable, you can usually bend it all at once no issue.
Beyond that first bend, your next step, is to continue to keep the plant bent over horizontal as it grows. This will allow the side branching to recieve more light, which will promote them to grow faster/heartier than they otherwise would.
Your best bet, is to go to growweedeasy.com. right near the top, there is a green box that says "plant training". Click that and read