If I was going to scam, why would I continue to post?
Put the pieces of the puzzle together.
You will get the funds back.
What good does it do posting here if I was going to scam you? Think logically.
You still haven't answered my question about why you wont pay him back from your own funds. You stand to lose more from trading spreads based on your claimed volume then you would lose by repaying him for your partners mistake