This address is no longer usable as I have lost the redeem script. Someone sent some 300 bits to the address but I think it is lost forever... It has effectively became another bitcoin burning address... sigh..
I will try again to generate another throwaway address and will play with it, before I actually generating a real address.
If you have the public keys should be able to re-create the redeem script / address the same every time. See this example from bitcoinlib js