It is a stupid thing to steal. Violins require repairing and up keep and Strads are all well known and documented.
Only place this goes is to a private collector and even then what a waste because violins require playing.
a real interesting twist would be if Frank Almond hired some guys to ‘rob’ him to steal it so that he could have it for his personal use. they used a stun gun, yes to not accidentally shoot the violin, but at the same time non-lethal to him too.