This situation had passed the point of being merely alarming - Orsino felt threatened now, and it wasn't just the man's grip on his arm or the look in his eyes or even what he was saying. Something instinctual was telling Orsino that this man was just not right, beyond mere intoxication, and potentially dangerous. For once, he felt glad to be in a fairly crowded area. The store wasn't hugely busy, but there were enough people around that Orsino felt any commotion would attract attention.
"Get the hell off me," he said in a low voice, his free left hand moving automatically to the inner pocket of his jacket.
Orsino wasn't quite at the point of doing anything rash, but it was reassuring to know his wand was there. He cast a cursory glance over the man's shoulder, and noticed an employee nearby. Good.