No it wouldn't. The bank created the $9000 loan in the form of a $9000 checking account (demand deposit). Both were created at the same time, by the bank, "out of thin air" so to speak. That is exactly what happened in the example you agreed with.
I think I see your confusion. You think that because Salesman B deposited his check at Bank A, and Salesman A deposited his at Bank B, something changes, and somehow the money wasn't created out of thin air and is now financed by deposits when it wasn't before. Back to the example:
Customer A deposits $1000 into Bank A, which creates a corresponding deposit account.
Customer B deposits $1000 into Bank B, which creates a corresponding deposit account.
Both banks have $1000 of reserves, $1000 of deposits, and $0 of loans.
The reserve ratio at each bank is 100%.
Bank A loans $9000 to Debtor A and creates a deposit account for him.
Bank B loans $9000 to Debtor B and creates a deposit account for him.
Both banks have $1000 of reserves, $10000 of deposits, and $9000 of loans.
-->notice in the above that there was never a $9,000 deposit. The loan was created, distributed, and spent before any new deposit entered the picture.
The reserve ratio at each Bank is 10%.
Debtor A pays Salesman B $9000 from the loan via a check from Bank A.
Debtor B pays Salesman A $9000 from the loan via a check from Bank B.
Salesman B deposits his check (from Bank A) into Bank B.
Salesman A deposits his check (from Bank B) into Bank A.
-->Here is where I think you are getting confused. You think the deposits from the two Salesmen created the two $9,000 loans. This is absurd, because loans were created before the deposits. Furthermore, where is this money coming from? Salesman B is depositing $9,000 that came from Bank A, and Bank A got that $9,000 from what? Go up a paragraph, and the answer is clear. Bank A created that money out of thin air when it made the loan.
Bank A and Bank B both have $9000 checks from each other. They cancel each other out.
Both banks still have $1000 of reserves, $10000 of deposits, and $9000 of loans.
The reserve ratio at each Bank remains 10%.
Each Bank created $9000 in loans even though each bank only had $1000 in deposits at the time the loan was created.