Using the Mohs scale of mineral hardness, there should be absolutely no "glass" (borosillicate, aka Pyrex) in your solution, unless you were to use something harder than borosillicate to smash your Adderall beads. I don't think I've ever seen a shotglass made out of real glass (soda glass, "container glass" in this case), so unless your screwdriver bottom was made out of some sort of metal and not the usual hard plastic, I wouldn't worry about it.
I never use anything harder than wood to scrape my "glass" (boro) pipes and bongs when I'm cleaning them, as using a sharp metal object, like a cast iron butter knife or steel razor blade, will definitely scratch your "glass" piece as steel is harder than boro. A kebab stick or toothpick usually work great. I learned about Mohs scale of mineral hardness on a weed smoking forum, actually.
On the other hand, using Frisbee plastic could leave tiny plastic fragments if the Adderall XR beads were harder than the Frisbee's plastic, but I doubt it, although your metal spoon is definitely harder than the Frisbee, but using the bottom of it should be ok as long as it is molded properly and is smooth.
The shotglass + screwdriver method is still FTW, I thought it was the official Bluelight method of crushing XR beads? Do a search for old Adderall XR bead crushing threads, you'll see that it is commonly accepted as the best way to crush em.