If I had to read bwb's mind (and I'm sure it would be a pamphlet) he is thinking...
Other team
Pre; 105M salary, 105M salary cap, $80M other budget
Post; 110M salary, 110M salary cap, $80M other budget.
Without realizing
1. Other team still has increased their cap $5M
2. Deal doesn't get done without the cash, thus nullifying his "cash is the same as salary" statement.
3. The "he can't do anything with the $5M" statement probably applies to this scenario. It's moot. He's already done something which is acquire the player he couldn't acquire without the $5M.
On the philosophy side, some say "I want to know what you are doing with the money" and would make their decision based on the answer.
Zero tolerance would say "transfer $10M from prospect if you really want him, sucker"