It’s always a good idea filming as much pratically as you can – but I am well aware of the scene you mean, especially as I just watched that movie again (for the sixth time?) earlier this week! 🙂
Without having AE open at the moment (and without dabbling with 3D apps like 3ds max where it would work well but take time to set up), you might try painting the crack pattern in Photoshop as an alpha channel and using it as a displacement map, again using animated masks to reveal the effect.
If the camera is moving – but panning only, or hand held in place – you could then track this effect to the shot quite nicely and easily…(otherwise yer getting into 3D work again…)
Just a thought! Have a look into the superb displacement mapping tutorials on here, by Aharon Rabinowitz – that should give you everything you need to pull this effect off quickly and easily.
If you want to dabble with partciles afterwards (Particular if you have it), you could create some simple dust clouds as he lands…good luck!!
Regards,
Nick