Thats happened to me before, just try making another.
Usually it comes out better than the one you lost ;)
Yeah! Like, one time I made a spar, and I was REALLY mad because I didn't save it, and like 3 spars later my friend uploaded it and I'm like "Wow....That SUCKED."
^This is way simpler than YoYo's thing.... I use this, but YoYo's anti-space bar script is also well helpful if not as helpful. But remember to always keep that auto-save one no matter what. (:
The cool thing about toribash, you may even make a better replay than before. Don't ask how, just stick to that and the world of worries will melt like ice cream.