After all that Russian government is done, last thing you need to do is to rush to trust them blindly on anything they say.
But if it is legit, it just means they ran away with a tail between their legs and that's absolutely fine by me. It will be a blow to Putin overall, but it's his miscalculation there - he overstepped quite a tad.
Either way - he had 2 bad choices to make, so if the report is true and intentions are to withdraw - he chose the less bad option given the situation.