I can see Bundy feeling that he’s less vulnerable to assassination while in custody.
Exactly.
Either that or he's afraid the feds will plant guns, drugs, child porn or whatever in his residence during one of the mandatory "home confinement" searches, then bust him for violating the terms of his home confinement and be able to keep him locked up even if he's acquitted of all these charges.
I can see Bundy feeling that hes less vulnerable to assassination while in custody.
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He possibly feels that way but the article says hes refusing release while others involved in the case remain in jail. Bundy is a man of principle.