Ive known Matt for maybe 10 years and hes a top guy,back in the days when he used to come to the CRSOC regional days.
Matts had his problems along the way,we all have, but he will go out of his way to deliver something if its needed urgently enough.

if you cant get hold of him, it would be for a very good reason and im sure he will get back to sometime or another, time allowing.