NO! IH built Cub Cadet hydros (with the manual valves) do not "roll freely" when only the forward/reverse lever is in neutral.
In order for the tractor to roll freely the hydro release valves MUST be pressed. Not doing this and towing/pulling/pushing the tractor is the ONLY way I know of to destroy the transmission.
If the tractor is running on a flat surface and you have pushed the pedal down and the tractor doesn't creep (forward or reverse) you are there!
If it does creep, then you need to go here,
http://cubfaq.com/neutraladjust.html