There is a warning here for Bernanke about the market's perceptions about lending to corporate America. But for us traders, this is a decent risk-reward trade to short "junk bonds" and look for lower prices short term. It looks like buyers have stepped aside and now there is marginal selling going on in this market.
You can see the average range is picking up after a long slide. This merely points out that money is flowing into or out-of a market and in this case it is flowing OUT.
Look for short-term declines and sharp rallies to re-short.