I just found this and decided to bump it to update my situation for anyone who is interested.
I tried hand crafting a custom cable out of two cat-5 ethernet cables. They have 8 wires in each so I used two strapped together and just left one unconnected to match the 15 pins in a VGA cable. I ordered male and female VGA connectors from a hardware surplus website. I then handcrafted the cable with solder, electrical tape and a very steady hand. The cable ended up working, rather shottily I might add, and with some noticeable feedback which I decided was probably due to weak shielding of the wires. The important part however was that my control pod did not blow out and that it could handle two power sources from either sub.
So I ordered a custom cable which consisted of a shielded, split vga cable with pins that run straight through. It ran me about 70 bucks. The end result however is TOTALLY worth it. I have 2 sets of speakers (only one of which I actually paid for), 240 watts of bass (400 watts peak power including the sats), and the satisfaction of knowing that I worked the system. Speakers sound awesome.
I'm putting this out because I know there are a lot of people out there who are in my boat with this particular set of speakers. It IS possible and it'll run you about 70 bucks to get the job done.