I'll pass that last bit along to the person who bought the phone from me. I did replace that clip (the "spring clip" in the original post), though--the problem was that I borked a circuit leading to it on the mainboard.
This step neglects to mention the adhesive (mentioned in the video) that attaches the glass to the digitizer and LCD. Because I didn't know about it, in an attempt to remove water on the LCD, I ended up destroying the display, which puts me out one $550 phone (and that's not covered by Sprint's insurance).