I've never read that Jeremy was regular attender at WHF for a 9pm supper. After a 14/17 hour day I assume he would want to get away from the farm for a few hours.
He hated June and had not spoken to her for years, according to MM. Even after her death he was saying nasty things about her to the police, AE said. Jeremy admitted as much when testifying.
He didn't need to see Sheila or the twins. They had both gone to see him earlier in the day, and he could see them any time he wanted while they were at WHF . The twins likely to be in bed anyway.
Neville he saw every day and again, he also had a poor relationship with him.
The supper that night must have been a bundle of laughs. Jeremy telling Julie his day went 'as best as can be expected'.
A guilty Jeremy obviously needed to attend WHF that night. To load the rifle and put it in an easily accessible place. He could have opened the bathroom window an inch to ensure easy access. And he would have made sure everyone was staying at WHF, as expected.
Having supper also supports his claim that Sheila had easy access to a rifle and that a fostering conversation pushed her over the edge. It also gives the impression he had a good relationship with his family, otherwise why have supper with people you don't get along with ?
An innocent Jeremy is one unlucky man. But has never shown any regret for leaving the loaded rifle out, after conversations about fostering had taken place. Although he thought Sheila was a 'nutter'. Simply saying at court 'I didn't know what was going happen, did I ?'
Do other people believe the judge was referring to the last supper as one of his 'curious coincidences' ?