Re: wood floor cupping
If you have an 8" wide board that is only 3/8" thick, I'd wonder if it didn't cup. Or crown, or turn into a potato chip. mmmm, potato chips......nomnomnom
Back to the topic. Maybe were they glued down they could remain flat. Even the fact that it's quartered won't save the day. This is a product that oughtn't be sold without a lot of fine print. I'd demand the manufacturer return your money with an apology, if you were not warned ahead of time that this would occur.
Remove not the ancient landmark, which your fathers have set.