Ouch! You're lucky you weren't hurt more seriously! Were you holding the weight the way Cathe does on this tape? I find that to be a very risky position, and prefer to use the "both hands around the end of the dumbbell" hold, which feels much more secure (especially since I'm using heavier weights than Cathe: there's no way I'd use the hold they do on anything heavier than 15#--I tried it--- and even then, I prefer the "end of dumbbell" hold).