Ability to delete multiple workspaces or remove myself from multiple workspaces) in Concourse all at ONCE

Currently, I, personally, have 400+ workspaces in Concourse, which REALLY slows down the speed / loading of Concourse. Having to go one by one to either remove myself from each workspace or delete some workspaces is going to take hours. And while I realize not everyone has as many workspaces, this does affect many of us from the AC teams, Functional team, etc.