When we say that the Speaker has "the clear authority to expel a disruptive member", the term "expel" has no implications regarding salary or anything else. Rather, it means that the member may be expelled without there being a vote in the House. It seems that in the past, the Speaker sometimes requested the support of the House to expel a member of Parliament. Now, he will be able to do that with or without the support of the House.
On February 1st, 2007. See this statement in context.