No, no President can revoke a commutation, even if the remaining sentence has not yet ended. The sentence has now been changed, and Manning’s release date is in May. Presidents do not have the power to impose sentences.
I think the only legal process that could cancel this commutation would be to demonstrate that the commutation was done in error, e.g. with the wrong name.
Or by someone who was never really the president to begin with.
You mean like Chelsea instead of Bradley?............hmmmmmmm............