Last one in desperation!

[Edia]

can anyone work out this to finish Saturday's.
31 Retracts apologetic outburst right on track (5)
I have S-O-R.
I can't believe I can't figure out 2 letters.

[alexanderd]

spoor

[Edia]

Can you tell me why?

[glasman]

Spoor

[glasman]

Oops back + r

[Edia]

oops! i had that and didn't notice. lol

[Edia]

Thankyou very much. Finished!

[alexanderd]

oops backwards(retracts), love(o) in party(do)

[sandyRoe]

Oops(apologetic outburst) retracted(turned about) + R (right) and Spoor is a track left by an animal

[jazzgirl]

Spoor (outburst = oops) + r