Throw spin like a normal 5, except drop leading shoulder a bit and look down behind you instead of at the horizon (The lower you look, the more corked you'll be).  Be sure you're tucking your spin (or you'll land on your face), and grabbing it actually helps (Start with a safety or another easy grab).  Keep it tight until you're back on axis.  I try to spot my landing under my lead arm.  Try it on a trampoline first if you can.
BTW, a cork 5 is actually more difficult than a cork 7 because the landing can be a little blind and the rotation to 7 is more natural.