[Sachiel7]

Basically, I think it depends on your intentions.
If you're flipping a bot simply to render it helpless and you know it can't self right itself, then yes, that's wrong.
If you're flipping a bot that you're pretty sure can self right itself, than that's not as bad.
Personally, I see no reason why you would want to flip a bot when you can pin it anyway. True, that if you pin, your bot is dedicated to that task, and if you flip, you can continue on your merry way, but I still think that if your strategy involves holding off the other team, pinning is an easier and wiser option.