My favorite aunt had a slightly similar problem. My uncle clearly committed adultery and neglect. After many reconciliations,, they divorced. Within a few months, he showed up at meetings and hoped to be reinstated. She thought she accumulated so much evidence and cried to the brothers so hard, they would tell him what to do with himself. They took his side. Sisters come and go but a brother - wow. He was a Bethelite - wow-wow. Plus, an overseer at one point. It wasn't funny to see her tears.
He was reinstated. Altho his son was his son, he would travel from another KH to verbally harass my cousin who did absolutely nothing.
The saddest part was that I lost my light-hearted aunt. She became a shrew with bitterness. They were more bound together in hate than they ever were in marriage.