Considering that it's at the beginning stages of production and all anyone can seem to do is talk about potential leaning, I'm certain they're engineering this to prevent any issues. A rep already confirmed that they're using metal rods through the base, arm and body, and the lower-body will probably be very light compared to the base and torso. I don't think it's hard thing to prevent with some forethought, and their attention is already on it.
Don't have anything to say, just saying
Oh ok actually i do. Yes i did hear that! I hope you're right. Saw pictures of the JSC Spidey from last year already leaning a couple of days ago.