T.C. Brown is the course captain there. You can get his contact info from the "Courses" page on the main STLDGC site.
That said, becoming a club member is the best thing you can possibly do for disc golf in the area. The measly $20 you pay is used to pay for maintenance on the existing courses and to build new courses like Carrollton Park in Bridgeton. If you don't do it for that, do it for the discounts at Johnny Mac's and Gateway - you'll make that $20 back in savings in no time.
Thank you for picking up trash, that is a huge help.
2013 STLDGC Tag #107
2013 SCCDGC Tag #78