Someone who has parts missing might want to take the lead.  Either on this post or a seperate post comprise a list of each member that has been affected by his poor business dealings,  have a list of every part still missing, any money paid to him and what was to be done.  Those involved then should begin to find any pictures of your stuf, check your banks for proof of what has been paid etc, start to create to the best of your memory dates and what what was said when and to whom.

If you have all that info compiled and presented together to local law enforcement or state district attorneys office they will take it more seriously and better understand the scope of what has happened and tell  you what action to take or how they might help you.

I feel for Matt and what he is going through.....but there is no excuse for the lack of communication.....putting your head in the sand might be easy and comportable but it only compounds the problem.   He should contact each person and say A) I lost your stuff--lets make it right   B) Im behind but I still have it (include a picture as proof) and ask customer if they want it back or want to wait to have it done.--that one is obvious.
AND RETURN ANY MONEY PAID...

Something is so so wrong here---I fear if he had your parts still he would be contacting people complaining and communicating...I HOPE I AM WRONG.  But one does have to wonder.  Im sorry some of you have to go through this.  IT HAS TO SUCK!!!