One of the other issued you need to remember is that just because a "TX" (Training X day, as Atlas calls it) is placed on your line, doesn't mean it will stay that way...changes are a way of life at Atlas, and that includes while you are in training...any training course, new-hire, initial, transition, upgrade...any training, any line of flying, any line of reserves...change is a constant here.
Beware and be warned...it is not a good thing to go home for ANY reason. Others have already covered the reasons why not to do it...'nuff said on that.
Oh, did I say it already? Well, one more time won't hurt!! Change is a constant at Atlas...