Is the Scrum Master a disruptive role?

While talking to one of my team during our regular chats, the number of changes Ive challenged the team with came up. I was glad when he said he could see the value in them, but was surprised when he said he initially saw them as a disruption.

The scrum master role is seen as someone protecting the team, i.e. prevent disruptive outside influences from causing internal disruption. So I was initially worried, as thats the opposite of what Im supposed to do!

Before I did anything, I was wise enough to check with the other members to get their take on it. My favourite answer was (emphasis mine):

your job is to push the team and challenge them to do better

I can see that could be taken as disruptive, so I did some digging. I couldnt see much reference to the Scrum Master being a disruption, until I came across this http://www.scruminc.com/the-power-of-disruptive-leadership/. Its quite hard to get the meaning of the presentation from just the slides, but Im taking comfort in the title.

Personal Conclusion

After a fair bit of thinking, Ive come to the conclusion that disruption is as another tool in my belt. As long as I limit its use to when I think the team are stagnating, treading water or could simply do something better, it could be a very useful way to ultimately increase velocity. Importantly, I think as long as I dont expect all of my suggestions to be acted upon and Im more than willing to be told Im wrong, I see no problem with it.

Thats my conclusion, but Id be really interested to hear other opinions in the comments below or catch me on twitter if you prefer.