We all know tomatoes split, but what are the different stages of them splitting? can they heal from the various stages?
Firstly, Tomatoes splitting can be a natural, normal occurrence for many cultivars (especially big beefsteak type heirlooms). As far as stages go, I'd say there aren't really specially labelled stages of splitting, but the splits usually start before the fruit is ripe, and callous over sealing out rot before the fruit ripens.
The splitting will not reverse under any circumstances.