gt:
If the post is still hooked good to the beam you can put another post beside the bad one and use a jack to lift the temporary post up and hold it up while you repair the post.
above is a shot of the temporary post with a jack on the top and below is the bottom of the supporting timbers.
There are lots of ways to doing this depending on what you have and/or what's in the way....
Good luck with your project.
