Rick---I don't pop off bulblets because I think I could cause possible damage which might allow a pathogen to attack. Let the short piece of scale be the one to be attacked. Yes, if the scale is still solid and large enough, it can be re-incubated for more bulblets successfully by cutting a new breakline across the base. I have also tried scribing a line across the scale face and made 'V' notches on the sides near the base with occasional success the second time around.
However, this second time around procedure ends up being inconvenient in most cases because it usually involves only a scale or two. The resulting bulblets end up out of sequence to the rest and you end up baby sitting only a couple baggies when you should be doing other stuff. But if I want the additional bulblets bad enough, I'll do it, no question.