Sorry to hear the thing fell apart. What kind of glue were you using? I've not had any problems like this before, and I live near the water in Rhode Island where it can be pretty hot, really humid, or really cold, and really dry, or any logical combo of the 4. I slap on the resin on the inside, THICK, and from the bottom first because nobody really cares what the inside looks like all that much, it helps with sanding, and the lower layers support the higher ones. Gravity sucks.
Keep at it though! Your pep work looks tight, way better than mine has ever been.