How do I un anchor the players for my TS script?

Hello, I'm making a TS (Time Stop) script and I need help. My script uses a part to function, the part gets created at the player's (who fired it) position. It expands outwards, whoever touches the part (Except the player who fired it) gets their HumanoidRootPart anchored, so they can no longer move, it also changes the lighting and other things. The script works perfectly (almost) but there is 1 problem. After the wait command I use is over, the TS script is supposed to go back to normal (Time is no longer stopped, no one frozen, lighting is back to normal) That part was fairly easy, except I have no idea how I'm supposed to un anchor the players that got affected (Or all of them in general). Thank you!

Script:

local tweenservice = game:GetService("TweenService")

script.Parent.RemoteEvent.OnServerEvent:Connect(function()
    local stopper = Instance.new("Part", workspace:FindFirstChild("Howatcha"))
    stopper.Position = workspace:FindFirstChild("Howatcha").HumanoidRootPart.Position
    stopper.Anchored = true
    stopper.CanCollide = false
    stopper.Size = Vector3.new(0.1, 0.1, 0.1)
    stopper.Shape = Enum.PartType.Ball
    stopper.Material = Enum.Material.ForceField
    stopper.BrickColor = BrickColor.new("Dark orange")
    local tweeninfo = TweenInfo.new(3, Enum.EasingStyle.Quad, Enum.EasingDirection.Out, 0, true, 0)
    local goal = {}
    goal.Size = Vector3.new(918, 918, 918)
local tween =   tweenservice:Create(stopper, tweeninfo, goal)

    tween:Play()
    workspace.Sound:Play()
    workspace.Terrain.WaterWaveSpeed = 0
    game.Lighting.ColorCorrection.Saturation = -1
    game.Lighting.ColorCorrection.Contrast = -2
    stopper.Touched:Connect(function(hit)
        if hit.Parent.Name == "Howatcha" or "DJL7D" then
        else
            local rootPart = hit.Parent:FindFirstChild("HumanoidRootPart")
            rootPart.Anchored = true
            wait(7)
            game.Lighting.ColorCorrection.Saturation = 0
            game.Lighting.ColorCorrection.Contrast = 0
            workspace.Terrain.WaterWaveSpeed = 10
            rootPart.Anchored = false
            stopper:Destroy()
        end
    end)
end)