We all agree that a too high CYA level is undesirable and we know that the only way to reduce it is through dilution. In Martha's case that will be at least eighteen-thousand gallons. That's a huge amount of water!
The fresh water has to come from somewhere: a reservoir, an aquifer, piped in from another state. The waste water goes into the sewers, septic system, or is drained on the land where it will likely evaporate or run off (the location is TX) when discharged rapidly rather than slowly soak into the ground to replenish the aquifer. At a time where droughts have been and are threatening our food supplies we pool owners need to be especially aware of and responsible about our water usage.
High CYA levels require special water management and diligence. Just as the stabilizer didn't get that high in one week it doesn't really need to be brought within a more normal range in that short of a time. This pool could be drained of 1,000 gallons per week over the next several months. With a little bit of plumbing magic the drain hose could be made to connect to a soaker hose and provide irrigation for the surrounding landscaping. Refilling of 1,000 gallons of fresh water would put far less stress on the water supply.
I often feel that we pool owners are an especially privileged group for being able to create and live in an environment where we have the luxury of playing in a dwindling natural resource. I believe that we need to hold ourselves to a higher standard of environmental stewardship because of that.