I imagine Lynch's beast mode comes from the animated Transformers show Beast Wars. That show seems to have the earliest use of the phrase and Lynch is also young enough to have been a viewer as a kid.
The Seahawks should continue to bless their lucky stars getting Marshawn Lynch. Probably the same for him. It is interesting sometimes looking at how things come together due to seemingly unconnected events.
Very happy with what the team has going on right now.