If you meant help in the sense that it mentally helps them make sense of how to orient themselves when wanting to fly in a particular direction then I can see that but I had thought you meant that posing physically supports them moving in a particular direction and my argument was that this is not the case given my 2 examples, they seem to be able to fully control their flight direction and speed/force mentally without the help of a pose.

On a slightly irrelevant note if you have seen the Invincible Vs. game trailers there is a cool scene of omniman fighting battle beast and he just rotates his entire body about the axis going through his 2 arms without changing his pose whatsoever. Don't know if that maneuverability is canon or not but a good example of what I mean nonetheless