Yes, the root/admin user can remove a team member completely from the account.
To remove a team member, follow these steps:
1. Go to Team Management from the menu, find the team member, and click Delete.

2. Choose what should happen to the websites owned by the user.
a. Delete all websites, or

b. Transfer all websites to another user (including the root/admin user)

Once confirmed, the team member is permanently removed, their access is revoked immediately, and the selected action for the websites is applied. This action cannot be undone.