Possible Clues:

• Fly out of control following alarm over zero pressure and 15
• Botched entry from board - corporation failure
• Cannonball's cousin
• Sloppy dive
• Ungraceful dive
• Ungainly sprawling dive
• Ring college about housing female in crummy dive
• Dive in which abdomen bears main force of impact with the water
• Inexpert dive caused by sagging paunch
• Make a big splash, maybe