Rubygems: rollback to prior version

I used to have rubygems 0.9.2 installed on my linux system. I upgraded
it using:

gem update --system

And it seemed to go fine. When I check what version is installed:

~ :
… gem -v

To cut a long story short, I want to rollback to the previous version.
Is this possible without having to reinstall all the gems?


~ Mark