That's not accurate - the uprising was not planned in collaboration with the Russians.

The whole point of the uprising was to liberate Warsaw before the Russians get in, as everybody knew that Russians are not liberating Poland - they are looking to occupy the country, just as Germany did. If the Uprising was successfull, it would give a great credit and negotiating card to the Polish government.

Unfortunately, Russians knew that too - that's exactly why they stopped their advance and watched the city being razed to the ground. Also unfortunately, they were right and ended up occupying Poland for the next 45 years.