Hi Mattrom,
I'm glad I'm not the only one who found this clue particular challenging.
First 3 letters of the answer come from the first 3 words after the H has been moved (think of a game of poker) - you then put the H I in front of the A and move them both to the front of MATE (remember the preamble says spacings can change) this gives the next 4 letters and then you obviously know the final one.
I haven't explained this very well so please feel free to come back.