OMG!

If it has already spiraled into mania, then going down from 75mg to 50 mg would not fix it - he would actually need drugs to counteract mania. If it IS mania, then even dropping Zoloft at once might not help, because his mania is out of control.

Without HIPAA they would not SPEAK to you about anything, sure, but ... they cannot even taken input from you?

the bad thing is that he has a family doctor and refuses to see a psychiatrist. Once it is not a garden-variety depression/anxiety but something else, family doctors are out of their depth. Even with garden-variety depression/anxiety, psychiatrists are better positioned to make judgment calls.

The biggest trouble is that, as a rule, people who are manic - especially for the first time - do not recognize it. One of the main reason bipolar people are often mis-diagnosed as depressive, in the beginning (and that beginning might take years) - people see doctors only when they are depressed. Otherwise they see no need to go talk to a doctor. I am afraid that this is the case with your husband - begrudgingly, but he went to see a family doctor for depression, but now he has other symptoms and he won't listen to you.