Let me start by saying that the firing sounds like total BS. Sounds like the AD simply did not like Aguero and was looking to sack him. However, in terms of keeping his job, getting it back, or getting a new gig, recording the conversation and disseminating it to Gugala was a mistake.
The college president is right about this being unethical. The AD and the HR person were recorded without their consent. But most egregiously the private affairs of a student were broadcast without his consent to the press. I mean, come on, Aguero! Even if the athlete would have been ok with the entire world knowing about his grandfather's death and administrators calling him 'a basket case,' this is still a disgusting breach of ethics. Isn't this legally actionable in some states?
If in such a position of power, I would NEVER hire someone I knew had recorded a conversation without consent and then given it to the press. This is my, almost certainly debatable, opinion but if you are going to record your employers without their consent, give out private information about your student athletes to the press, then be ready for other potential employers to view you with a wary eye.
Also, Gugala, are there not ethics in terms of printing such materials? Even if you wanted to print such a sensational story ('Man fired for running marathon'), could you not have edited out the discussion of the student?