where did I say anything about "damage anything" when using a screw driver? damage occurs when you have a "oops" moment and slips out of your hand and it strikes something like what happened, which is why it's a bad idea to begin with! screw drivers are meant for removing screws, not prying... so if you are using it for purposes other than intended, you better be smart about the size for which you are using it for the unintended purposes
if you use a large screw driver, especially one with a heavy handle (usually those multi exchangeable bit ones), those are hard to control, and when they do slip off, the mass of it can easily smash something up good!
even if the tip and handle weren't large, a long screw driver can be just as bad... because you have much less control and more force (due to leverage) from it being longer... a slip might not damage anything if it hits the board, but a slip might break the clips for the SIMMs
so as I said, if you must use a tool, use the right tool for the job!
in this case, a short small flat blade screw driver (with a handle large enough to easily grip, but not large enough to be hard to control... jeweler's screwdrivers are a bad idea because they have very small handles) is best for this type of job