A bit extreme, I would go for a more like a 45 degree angle on the main stem and locate that tie lower down the stem.
You could also tie some more branches down, those tall ones, mid way up, are going to take over and thereby shade the top half of the plant. Whatever is the highest point will take off as the new leader/main growing tip. This is why I prefer a 45 degree angle and to preserve the main stem as the primary growing tip, and get the branches growing horizontally. Think of Jesus on the cross (leaning back), that is what I aim for with the main stem/branch relationship.
You relly want to open it up like a fan that is leaning backwards.
Any branches on the back side of the main stem can be trained towards the left or right side, or even removed altogether.
Tying the plant down does not really create any/much stress at all, they recover within hours and there is no risk with this technique.
Even if you remove any ties and reposition/re-tie any branches, including the main stem, it may look weird for a day or two, but will reorganize itself soon enough and without any detrimental effects or risks.
Cheers, Organoman.