Dwight Howard's Baby Mama Royce Reed -- Dear Judge ... Please Let Me Trash My Ex!!!

Dwight Howard's baby mama -- "Basketball Wives" star Royce Reed -- desperately wants the freedom to publicly trash talk her ex ... so she's asking a judge to lift the gag order that forces her to keep her mouth shut.

Royce had agreed to gag herself back in 2009 in her never-ending, bitter custody dispute with Dwight. But Reed now has a few things on her mind that she wants to share with anyone who will listen. Reading between the lines, here's what she wants to say:

-- Dwight is not morally fit to have custody of their son
-- Dwight's mental state is sketchy
-- Dwight has funny substances laying around the house the kid shouldn't see
-- And she has other horrible things she wants to say about Dwight

Mind you, those are just allegations, but she wants to file legal docs making these allegations and she wants the documents available to the public.