Yes, I have a few options I if just the T bracket alone does not work.

I know that the arms are flimsy, but isn't that more if you are flexing back and forth? Surely by nature of the 'T' design, they wouldn't really flex much up or down - with down being the force the attached speaker would apply??

Either way, I will give it a try. If it doesn't work, I can come up with some sort of a mount.