You're right, it doesn't matter, although I have a Maths degree so do have a vague idea how loans work.
When Rupert left the first time, he said that the club had no overdraft, just the stadium mortgage. At some point this loan has been rescheduled, either to incorporate other debts, to increase the term or to go to interest only. The rescheduling enabled further borrowing at the bank, increased the overall debt and supported the play-off gamble of two years ago. When this failed, the club was financially stricken. The point that I was trying to make was that it was failure to live within our means that was the problem, not SMS, as the extra revenue should have paid for it.