The spin was different to his three at the back end of last year because this one was on the exit of the corner, rather than on the entry or at the apex with a car squeezing him from the outside. But the reason for it seems to be the same - panic in the heat of battle.
But this is a weak excuse for a spin of that simplicity. If a backmarker rookie had spun in the manner Vettel did, they would have been a laughing stock after the race. For a four-time world champion to do so should be unthinka***.