It is possible that the tip itself was the problem, but with those tips it should only happen on very rare occasion. I too have only had one or 2 do that, one easily came apart while I was crowning It, and the other after a short period of play. Keep in mind i can't even count how many I have installed with no problems at all though. They have been used for play also, but I install most for breaking, and they usually hold up great. From my experiences It doesn't seem to be a batch issue when It happens either, just the occasional individual tip, the rest of the batch were always fine.
If your having more of these problems then just the one, then I would ask the same questions as Jerry did. But if the method of trimming and shaping were the underlining cause, then I would expect that It would be happening with some other brands of laminated tips as well. Not sure how many tips You install, or what your using to do the work with, and I haven't used hand tools to shape and trim in many, many years, but if by some chance that is what Your using, then I can say from what I remember of the many different type hand tools that were available back then is that they were hit and miss, and most of them could be real hard on laminated tips, and easily cause de-lamination when not carefully used. some tools would cause It despite best efforts to avoid It.