I am guessing he now has some back door into my wallet and if I were to deposit that $5k, it would automatically be sent to his wallet. I am broke and don't have $5k anyway and I am not going to do it. I don't feel like losing more money since I have lost everything and now am filing for bankruptcy as the banks are holding me accountable for the reversed funds and there's no way I can pay it back.
I don't think the scammers as a back door to your wallet rather just like Husires said earlier, he will definitely scammed you of the $5k through this since this type of scam is called honey pot scam. Here he has already lured you with the $100k in the wallets but if you try to transfer such coin the $5k or any other amount you use will go to him, which automatically occur through a smart contract call when he created such coin
What do I do? Is there any validity to the $5k to turn a $100k token into a refined coin? How do I find out if he has a backdoor into my wallet and in turn close it? IF YOU READ ALL OF THIS I DO APPRECIATE YOU AND ANY HELP/ADVICE YOU MAY BE ABLE TO PROVIDE.
Don't even try sending it to him, I have never heard anything like refined coin but I guessed he only said that to you because he thinks he can still fool again you after the first scam.