

Yeah, the interest idea doesn’t make sense, especially since for most of the 21st century the interest on savings accounts has been negligible.
If it cost $6 on the $1500 loan, that’s most (of not all) of the interest right there, and it takes time for that interest to accrue significantly. It’s not going to happen in a couple of days.
If this was the scheme, then your ex-boss was no criminal mastermind.
I have a similar story with ex-partners, but not as long and convoluted, and also without such a successful outcome, but I definitely understand how dastardly ex-partners can motivate you to want to succeed without them.