Yes, especially if the roots aren't widespread and if you let the canopy get dense enough to catch wind.

Proper thinning and making sure when you water the tree that it gets deeply watered over the whole root area (canopy plus 5 feet).

from personal experience with African Sumacs (I had 7 in my backyard... slowly replacing some of them) My opinion is this: The chance of an established African Sumac going down in the wind or because of being "off balance" is pretty close to ZERO.
Yes maybe if it's a fairly young one and maybe if it was watered often and shallow, but I have established ones that are a good 20+ years old, and they are incredibly strong. The wood is one of the toughest out there. The wind is NOT going to break branches. and the roots are super strong as well. I just took several weeks to dig up one of them, and after digging down 3 feet all around this tree and chopping roots one at a time, I was finally able to pull it down little by little with my car, but it did not come down until I cut the last root with the chainsaw. I have one that is leaning heavily to one side... it just grew crooked (whoever lived here before let it grow that way) and it is still rock solid.
African sumacs are no sissoo or silly little "paloverde" trees (those are the ones you always see snapped after storms). I have yet to see one damaged by the wind.
Sorry I'm so opinionated, but I've cut and pulled out a lot of trees, and these are among the strongest.

From personal experience with the ones in this neighborhood - they are less likely to fall over than Palo Verde, but they do fall over and break branches if badly pruned and not properly watered.