Is the siberian the winter white? I'm not sure you can put the male back in as the male and female will mate again! Unless you want more pups...though I'm sure it wouldnt be good for the hamster to continuly have babies.
Good Luck
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The Campbell's and Winter White hamsters will mate immediately after the female has given birth so she may already be pregnant again. This is not good for the female as her body is not able to cope with so many babies. I would advise you to wait till the pups are about four weeks old then leave the females with mum and try introducing the males to live with dad. He may or may not accept them. You need to have large cages of they may fight or you may prefer to re-home the pups and just keep one male and one female as company for the parents.
hopefully you will have a son in the litter who you can pair up with dad to stop him getting lonely longterm, and a daughter for mum, then everyone is happy