Earlier quoted context omitted.
Yeah, it sounded like a perfect plan if no customers wanted to get their funds within the next 10 years. ¯\_(ツ)_/¯
No that's not it. You can sell the bonds any time. But now they're worth considerably less because interest rates are much higher now. They locked themselves in at rate that are now terrible for 10 years.
It seems like madness to leave yourself totally exposed to a situation like this. Rates rise, your investments fall and your depositors want their money back doesn't sound beyond the realms of the imagination.