Ack, it's late.
Vote ljfa. He was the only one to profit from the Alpha power usage yesterday, and, if the Alpha was triggered by a Hijacker, ljfa was therefore deliberately saved by the wolves.
The theory hinges on the Hijacker knowing the Alpha's role, though, so the Alpha must have revealed himself to someone at some point before last night. Alpha! I won't ask you to reveal publicly, but be wary if you've revealed your role to anyone. They may have fangs.
...This makes sense to my 2AM brain. Did I miss something? Are there any other explanations for the Alpha-ing? A voluntary usage seems kinda unlikely after fowl's
warning, unless the Alpha's actually ljfa (in which case he can just save himself again tonight).