On May 4, 11:54 pm, Tony wrote:

snip

Am I completely screwed????

Sure sounds like it. Wallboard is usually shipped in paired sheets
with the 'good side' inside, easily determined by the tapered long
edges. Your wallboard pro should have known this seems to me. The
manufacturer could also have made life easier for users of this new
product by plastering a little warning sticker on the outside with
instructions. Sheets of OSB carry instructions in this fashion to make
the product installation perform as expected.
Sorry for your loss.

Joe