User blog comment:Blackendedsoul/Unique Gomu Gomu/@comment-4800978-20120301052840/@comment-4800978-20120301055108

Well, I don't think he's ever been in seastone restraints so that idea is out. And I can think of many times when he has been split without willingly activating his power - mainly whenever he's been attacked by surprise. Zoro when they first meet? Then both times Luffy throws him at Mihawk?

At the very least he has the same kind of reflex control a skilled Logia user has - I'm willing to accept that much.