I used hawks for a long time. My two cents: leaning away from you isn’t too bad but your stick will tilt so like llama said get the top in contact. Leaning left or right be extremely careful, even with the top in contact you can still expect a shift. Even if you get the stick very snug the bark can still give and you’ll have an unexpected shift at the purchase point where your standoff makes contact with the tree, this is compounded if you’re using an aider where your weight acts like a pendulum. I experienced this very early in my adventures with saddle hunting, I was climbing a soft bark tree and my stand-off peeled the bark right off like peeling an apple and I just about took a header right off the tree. Also, depending on your weight, the angle of your stick, etc that’s a lot of force for just one stand-off to bear. You’re dealing with a hawk stick, not a custom made solution like a beast or EWO or OOAL. I’ve bent the foot pegs on my old heliums and that was just with regular climbing. The foot pegs aren’t stand offs sure, but hey.
So I said all that to say this, IMO if you can’t make four points of contact with a helium, don’t. But since we’re saddlehunters and prone to doing questionable things, get the top tight and snug that thing down like your life depends on it which in this case it very well might.