Thoughts on $SPY and that 749.28 support

Watching $SPY closely here around that 749.28 intra-day low. We've been hovering above it, but volume feels light on these bounces. If it breaks convincingly, say a close below 749, I think we could see a quick run down towards 748, maybe even the 747.50 area from last week. The risk for me is if we get a strong candle push above 750.50 on decent volume; that would likely invalidate this bearish bias for now and suggest consolidation or an upward move is more probable.