I found this glitch a little bit ago when I was trying to find new strats for SBZ1 in Knuckles in Sonic 1. Evidently enough, I did. Here's the new strat for SBZ1.
Shaves off 5 seconds from the current TAS.
EDIT: This is not the current strat anymore. Please look at the latest S1K submission to see the new strat.