Hey folks, I've always had good experiences ordering plants by mail by being careful but today I received a dire looking Brugmansia "Dr Seuss" hybrid (huge yellow flowers) but the seller washed the roots free of any soil and it appears he may have even cut them shorter!

The rest of the plant is soft and most of the upper stem is mushy. I've got it soaking in a tub of R/O with some B vitamin hormones but I'm not very hopeful. Anyone got any tips on how I might save this thing?