Let's not call anyone a liar. That's a little inflamatory.
I hadn't heard about a broken ankle. I don't know how the person could have gotten down the stairs. I have heard about some neck trouble. Some of these things don't present themselves for days, so seeking immediate help doesn't always happen. Some passengers also (rightly or wrongly) had reservations about seeking medical aid in the Dominican.
Regarding the whole "crash/hard landing" issue, I accept whole-heartedly the assertion from the pilots who have followed this discussion that you can't judge the speed of an aircraft by looking out the window. I think some people need to also consider that you can't judge the force the passengers experienced without having been one.
Talk to some of the relatives of those no longer living who actually experienced something deserving the term.
Does someone really have to die to make you ok with that term?