We had 3 successful business websites before but our previous manager combined all our assets into one through permanent redirection. Now, another manager came and he wants us to use the other 2 sites into separate business entities/business websites. Is it ok to cut the permanent redirection and make them separate sites again? I know it's a dumb question with an obvious answer, considering that it's a permanent redirection, but I want to be clarified from any of your experiences.
Update: Only the homepage is permanently redirected to our main domain. All pages are still cached on Google search even the homepage... Are the other 2 sites re-useable?