I'll look at this, this evening. There aren't too many here who can help with your problem, besides me. (Among other things, I'm a "master plumber" -- that was my job when I got into the pool biz 25 years ago.)

But, quick fix: go buy 5 or 6 all stainless hose clamps that will fit the Fernco fitting. Open them fully, put them around the fitting and reconnect them. Space them evenly, with each clamp rotated 180 degrees from its neighbors, then snug them up.

While you're buying those see if you can get any Fernco Permalink clamps AND some 5/16 or larger *braided* solid nylon rope. If the Proflex will fit, they will not blow out from pressure, but you'll still need need the rope to create a 'hold-together' load. You can see what I'm talking about on this A-store page: http://astore.amazon.com/poolbooks?node=67

Unfortunately, to use the rope, you'll need to learn the bowline knot, the butterfly knot, and a modified Prussik knot to tension the rope properly. I can find YouTubes for that, but it will still require learning the knots. You can try and see if you can accomplish the same thing with some 6 - 9 foot 1" wide load binders or straps.

But you will have to bind the ends of the line there: no neoprene clamp will reliably hold against the blow-apart pressure that is tending to slide the pipes out of the clamp.