Concrete vs. Plywood

From the evidence presented herein, we will determine culpability in the disasterous concrete pour for this second set of walls. Don't ask me why they formed and poured these two walls, instead of using concrete blocks. I thought it a good idea to pour the cistern walls, since it is designed to hold water. What do I know?
The plywood panel hanging out an an oblique angle is indicative of concrete form failure due to improper bracing, and shear bullheadedness (is there such a word?) on the the part of the job foreman.
When the cement was poured out of the truck, onto the chutes and into the forms. There was even a device set up to help direct the concrete into one confined area, directly under the chute. If you understand anything about fluid dynamics you should understand this - water doesn't compress - nor does aggregate; most especially blue bitch granite aggregate.
Witness the cement mix running like molted rock into the chutes of the concrete truck, see it curl it's way downward and into the chute, ever so effortlessly. Listen to the stones of the aggregate as the chafe each other and the steel chute, ringing like one rushing train of motion. Listen as the forms creak and groan from the abundant weight of the mix; roughly 7 yards @ 2.5 tons per yard / 35,000 lbs , or 17.5 tons. Notice that the concrete isn't flowing as you would have hoped, and instead it is building increasing pressure right where you are pouring the weighty slurry. A very load bang follows, with the sound of a crackling fire, as the braces and plywood fly about the area that was to be our basement room (dubbed Chico's room). The form blew open and dispensed the concrete, and, with the aid of gravitational pull this was occurring too rapidly for anyone to plug the leak.
Luckily no-one was hurt, since there was no-one in the basement room at the time of the blow out. Had there been anyone down there, the would have suffered bone crushing injuries, as the double 2 x 4 braces were literally severed at their ends in the explosion of gray slurry, the plywood forms broken in clean lines as though cut with a circular saw! With the force of the blast wood members flew everywhere, as if escaping from the concussion; the whole mess of lumber and cold, molten cement quieting down in waves.
This disaster didn't bode well for the workers, since it was at the end of a long day that this event occurred, and their work as yet unfinished. Cleaning up the mess was an imperative, since the room would be lost to the onslaught of concrete, the ooze seeping into everything, including the plumbers soil pipes jutting out of the uneven an unruly concrete layer.
By Friday afternoon, they had cleaned up the area and reset the forms for the repour. Braced now to the nines, the forms were not to collapse with the introduction of "the mix", not this time. The concrete repour went exceedingly well, as if the workers used the force of their collective will to make this happen, they had a long hard and unproductive week and the weekend stood before them, and much needed rest.