Ragdoll for custom rigs?

I am trying to make a ragdoll for a dinosaur. Currently i am using the BreakJointsOnDeath feature for it but it seems to be a little glitchy.. I was wondering if i could get some help.

the code:

local died
died = Humanoid.Died:Connect(function()
    local d = script.Parent:GetDescendants()
    for i=1,#d do
        local desc = d[i]
        if desc:IsA("Motor6D") then
            local socket = Instance.new("BallSocketConstraint")
            local at0 = Instance.new("Attachment",desc.part0)
            local at1 = Instance.new("Attachment",desc.part1)
            at0.Position = desc.part0.Position
            at1.Position = desc.part1.Position
                socket.Attachment0, socket.Attachment1 = at0, at1
                socket.Parent = desc.Parent
                desc:Destroy()
        end
    end
end)

what happens when i die: https://gyazo.com/807878f5544e3a1d0f1a2f0d304d90dc