That's good... with a proper base under your deck you'll be good to go! If it was roots you would be having to deal with stump removal and other such diggings...PB spent about 1.5 hours this morning removing the concrete and found that indeed it was settling that heaved that damaged section and not roots. If only they didn’t add that step up feature when the pool was built!!!
So your going to chip out and replaster? I'm trying to follow.