That's a horrible fold. The pot is way too big and our hand is too strong to let go. There are many aces that may think they're good that we beat and few hands that beat us, plus it looks like you have someone coming along on a spade draw. Get it in.
Hands that beat us:
AA (unlikely), 88, 66, A8
Hands we beat that might shove over anyway: AK-AQ (unlikely but possible), AJ-A9, A7, A5-A2, 86, 75, 97, spades, plus at this level always some non-zero chance for a total bluff (KK?)
If we're beat, it's a cooler, just pay it off.