Its not like they are going to shrink to the normal size they were or a normal man. They will still be working out, getting 400g of protien and 6000 cals a day. They have pro trainers and hopfully they will use PCT to maintain most of the size and stregth they have.
I've only done 3 cycles myself, I've gained a lot of stregth from every one of them and have been able to hold on to all of it and have gotten stronger since the last one which was over a year and half ago.