do i file the amendment with the motion? Yes.
can the motion be denied? Yes, in theory, but the court would have to have a good reason. The whole idea is to be honest with the state of your finances. If the court were to deny it, you did your duty. I really doubt that this would be a problem.
and can i fax it in or do i have to mail it?
Depends on the particular bankruptcy court. You could call the clerk of court and ask.
the lateness of it makes me nervous, but you do not think that the trustee will delay the case? No.
As to the second question:
It is your argument, as I understand it, that by refusing to allow you to pick up your property from storage, and taking steps to sell it, they violated the automatic stay. This would turn upon whether they were exercising a valid possessory lien or, on the other hand, whether their remedy was limited to a motion for relief from stay (in effect forcing them to so move if they wanted to assert a possessory lien). I would suggest that they waived any claim to a possessory lien by their clear violation of the automatic stay when they took steps to sell the property.