Is there a "death spiral for churches today?

I recently read the following from a post by Thom Rainer:

65 percent of churches are declining or plateaued. For most of us, that number was better than the conventional “wisdom” we have heard. In that sense it was good news.

Over 61 percent of churches average fewer than 100 in worship attendance. Yes, we are a nation of small churches. I love it. I love small churches.

But if your church has fewer than 100 in worship, it is likely to be a declining church. In fact two out of three of these small churches are declining.

Even more, there is a direct correlation with the rate of decline in a church and the size of the church. Simply stated, the smaller the church, the greater the rate of decline in attendance. Perhaps these three statements will clarify my point:

• A declining church with an attendance of 200 or more declines at a rate of 4 percent each year.
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• A declining church with an attendance of less than 100 declines at a rate of 7.6 percent per year.
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• A declining church with an attendance of less than 50 declines at a rate of 8.7 percent a year.

It’s a death spiral. Declining smaller churches decline much more rapidly than larger churches. Once the declining church goes below 100 in attendance, its days are likely numbered.

Here is the sad summary statement of this portion of the research: Once a church declines below 100 in worship attendance, it is likely to die within just a few years. The life expectancy for many of these churches is ten years or less.