Jim's account was disabled for violating the forum rules....
Now you can take it upon yourself to bother David with what ever questions you think you need him to answer, that is your choice... and no one will try to stop you from doing so.
I will say that David has been trying to clean up the forum for some time now and has steadfastly stood by his mods in their actions in trying to apply the rules of the forum. There has been many posters that thought they could circumvent these rules in various ways and were found out and had their accounts closed for a period of time that was deemed appropriate for the violation.
No single poster has ever had their account closed for anything other than violation of the forum rules. And all of them were given warnings prior to the closing of the accountsand they continued to ignore the warnings and tried to circumvent the rules and were caught.