Wait. Jeff, when I asked this question the other day, though you did not yourself respond you "liked" a response from someone who said it could NOT pit since the car was outside the track at the end of turn. I don't see much difference between "spin around" and "spin off." In fact, spinning off the track might be harsher and it seems strange to allow pitting in that circumstance and not when spinning around.
Harold. I understand the question, I do. But I must look at the cards and rules as written to make judgments. In this instance Spin Around clearly indicates that the car may not pit. Spin Off makes no such demand.
If you believe that I have made an error in consistency on one of these cards, please feel free to make a house rule to your liking. However on this forum and for "official" reference (if it is ever needed), I will try to not create rules that are not in the game.