Yes, temperature change will expand and contract the pool plaster and consequently cause the plaster to lose its bond to the old plaster. Draining the pool also dries out the plaster and causes it to shrink.
Generally, on new or orginal plaster jobs, the bond is so good and tight to the gunite (both a mechanical and chemical bond) that draining the pool won't cause any delaminations. But on re-plasters, it is very difficult for the plasterers to get as good of a mechanical bond (and no chemical bond), so delamination is what can happen. Sometimes, the loss of bonding happens immediately and nodules show within a couple of months, and sometimes it takes several years for delamination to occur, especially after draining the pool. It all depends on how well the plasterers bonded the new plaster to the old plaster. And pH balancing has nothing to do with it.
Generally, on new or orginal plaster jobs, the bond is so good and tight to the gunite (both a mechanical and chemical bond) that draining the pool won't cause any delaminations. But on re-plasters, it is very difficult for the plasterers to get as good of a mechanical bond (and no chemical bond), so delamination is what can happen. Sometimes, the loss of bonding happens immediately and nodules show within a couple of months, and sometimes it takes several years for delamination to occur, especially after draining the pool. It all depends on how well the plasterers bonded the new plaster to the old plaster. And pH balancing has nothing to do with it.