It's not about either 5C or 2D specifically (there are combos that involve both of these that work, even if you omit just the second 5A from my previous example, it will result in a regular spin state), so I was just curious if it's programmed somewhere in the game that spin state doesn't happen after X condition is met (ammout of hits, scaling, etc.). I'm not too familiar with the way ASW games do scaling (never quite got around understanding it completely), so I was curious if anyone knows why this happens.
2AB > 214AB > 5B > 5C> 2C > hop > j.5C > 2B > 2C > 2D > 236ABA also works, and does some sweet damage (3805 with Heat Riser, I'm not sure if poison damage is dispalyed on the counter), though the timing for j.5C is hard on this one (at least for me, practice makes perfect). It's not quite the best you can get (if you catch them crouching with 5A or 5B, there are slightly better options, depending on if you want the spin state or not).
But, if you add even a single hit to this combo (a FC 5A or crouching 5B for example, but pretty much anything at all at this point), the spin state won't occur. Guess it has something to do with this proration thing... gotta finally read up on it.