Not saying I'm totally right, but let me clarify some stuff:
1.) 3352-3353 are NOT in service... Phase-2 R32s have since been retired and disposed of, with the exception of 3350-3353, which are preserved and on-property.
2.) The mothballed R32s were actually stripped on the outside since 2011-2012, so scrapping those units makes sense. As for R32s 3720-3721, I have no knowledge on them except that they are OOS at Coney, so a reactivation of those 2 cars is possible. The mothballed R42s were also marked "NOT OK FOR SERVICE" according to a reliable source, just in case those cars were actually crumbling down too. I also do agree that the mothballed units have encountered serious floods from Irene and Sandy, so that could be a factor too. So saving the OOS R32s would have been impossible anyway, although those R42s could have been saved (10 mothballed R42s remain as of now, so those COULD be very slight possibilities).