morals vs. ethics

before I begin "intelligently" (note the quotation marks) ranting, let me rant in a completely senseless manner:

I woke up at 7am. So that I would have time to shower, wash my hair, and work my way towards looking fairly appropriate for the viewership of other human beings. Boarded the bus at 8am, and had to sit beside a person who smelled horrifying. I literally had to stick my nose to the window and later simply refused to breathe as much as possible. UGH.
Arrived at school promptly, even better than promptly, only to find out that TUTORIALS ARE CANCELLED. Why did I get my frik-a-frakking butt on the mountain so early? My first thought was: "I should have checked my email". I then proceeded to pick some things up from the office, and on my way out, I notice my T.A at the student-operated coffeeshop. I thought: "HUH? That's weird." That compelled to check my email, and guess what? There was no email sent beforehand! What's up with that? Why, Mr. T.A, DO YOU CHOOSE TO WASTE MY TIME?

*sigh*.

Alright, onto the more serious stuff:
How do you understand morals versus ethics?

Here's a view, verbalized in the eloquent words of my prof:

Ethics is a way of taking the moral impulse and making things easier for ourselves – alleviating responsibility from oneself. It is "everything you are prepared to do even though you can do more"; essentially drawing a line in the sand.

Morals, on the other hand, are infinite. They represent "everything that you could do".

For example, in Joel Bakan's The Corporation, it is brought up that corporations defend themselves against say, environmentally-friendly policies or fair economics, through their code of ethics. They say that, "our code of ethics makes us accountable to our investors", and the profit margin takes precedence over a greener Earth or fair treatment of workers.

In cases where investors have asked for "greener"/more just policies, they have been sued by other investors, and the courts have ALWAYS ruled in the favour of the latter because it is part of the corporation's "code of ethics".

Any thoughts? I thought this interesting.