One issue with fish jumping is that even those that survive until being returned to the water, can then die due to fungal or bacterial infections. The damage done to the fish because of drying out or getting dirty on the floor or maybe from falling some distance can allow something to really take hold and kill them. I've had it happen twice with jumpers which died a day or two later.
Getting stuck to the inside of a bag for a minute isn't likely to cause that type of issue, though.
Perhaps another way of looking at it is..... by spending some time on the carpet the fish's immune system is actually bolstered, in the same way a child's immune system is allegedly improved by exposure to certain things.
However, it's not something i wish to pursue.