Steve/Medic Diver,
i think what most people are concerned about is that generally the courses that are done over a weekend are very poor, they hardly have time to cover the material (if at all), the instructor shows you the skill and you repeat once - not mastering it, barely accomplishing anything and certainly not preparing you to be a diver - i know i had one of those courses. Only practice, diving with good folks off here and such activity made me a more proficient diver.
I think so far with this line of questions you have asked has been viewed by many as a little aggressive, seeming to want to fly through this as if not wanting to learn as much as get the card - which is a common fear amongst experienced divers about the current trend of divers coming out (i do not classify myself in their experience, but can see that already as i look around, even at myself sometimes). Again i can understand how you might feel not being able to complete something due to an outside influence (broken leg in this case) and just wanting to get back into it all. As always you have to know what you are getting yourself into, my above example of how some of these weekend courses are run is not uncommon, particulary in popular places like FL and some of the islands - there are however good instructor and those that will either take their time with you or make sure you have got the skills down solidly even if taking only a long weekend - solely teaching you for a decent fee, but those are harder to find and most seem to want to have a small class rather than a single student, and to take time to let the info settle in and for you to think through the info and skills so you are more able to learn. Being crammed over a weekend is less like doing a bachelors in 3 years, more like 1 year - i did mine in 3 years, but that is the system where i come from, you work all day everyday on it - you are a student and that is all, not this half day here and there or night school type deal where you can afford to pay your way through with what you earn at a full time job! But i digress.
Please understand that people want you to get a good education and become a good diver, i think most people on this board want all those who get in the water to dive well and often. Dont take their comments as attacks, just concern (as near parental as you can get i guess).
BTW, i would much rather find myself a few hundred feet into the cave in the right equipment with the right training than running into a burning building, hats off to you for that - i just hope and doubt you arent like my old roommate, who was a fireman, but a total d*ck too.