The ability to downgrade the version of Forge the server uses

My server was running just fine yesterday, but now I cannot start it up as it crashes when going through the post-init for Immersive Engineering. According to IE's Github, this is due to a change in Forge. Source I am using 14.23.4.2765 to run my mods, and that is stable, while xx.2768 causes the server to shut down. Could there be an option to manually set your version of Forge to prevent something like this from happening?

Edit: Essentially, I would like the ability to treat Forge like a mod, and only change it when I need to.

Thank you very much, Roman. This means a lot to me and my server mates.