OK, this actually did somehow work out for me; at about 10am on Monday I was able to get confirmed on the 6:45 am flight on Tuesday. So I'm glad to see that this does work.

However, I'm still very confused about how to tell if there is availablility on a flight? When I called this morning I had just checked seatcounter and saw that the 8:05am flight now was green across the board (it was the only one at the time). But the agent on the phone said no, there wasn't any T class available on that flight, but there was on the 6:45am (so of course I grabbed it). Additionally, all the flights are listed on CO.com as B class being the lowest available for purchase for all flights of the day.

So if I can't see the true fare class availability on CO.com and seatcounter doesn't match what the agents see, what is the best way to see real availability?