Sometimes just throwing ideas out for a complicated problem is a good thing. Other times it just makes a lot of distracting noise.
Research into spaying in a reptile veterinary manual will discuss the problem the OP is having.
If the ovaries are not taken out, the chameleon will likely continue to ovulate. There are reasons a vet might leave the ovaries in and I think the reasons relate to their surgical skill rather than a medical decision. The right ovary is very very close to the vena cava, a major blood vessel, and the left one is attached to the adrenal gland. A chameleon is very small--there isn't a lot of room when doing the surgery. It is not the same as a simple spay of a dog or a cat.
I know in chickens, castrating roosters is often ineffective as they will regenerate testicular tissue if any is missed. It might be possible that the the ovaries were removed in the surgery but a bit of tissue was left and regrew enough to produce the hormones regulating laying.
Psychosomatic is not a term I would attach to too many animals' illnesses, especially something as primitive as a reptile. Psychosomatic is an illness due to mental/emotional involvement. Chameleons are pretty simple--they eat, they sleep, they reproduce. They do not have neuroses. That a vet would use that term is worrying.
