Lehman Brothers CEO Dick Fuld has been in seclusion since the company's bankruptcy filing last week, but get out your popcorn and soda: he's set to be in Washington this week to testify before the House Committee on Oversight and Government Reform. Fortune's Patricia Sellers reports that "Fuld is supposed to explain what led to Lehman's collapse and explore the impact on financial markets and the U.S. economy."

For those of you who are playing along at home, there are essentially two possibilities for what Mr. Fuld will offer as an explanation:

• "I screwed up. We borrowed too much money to make bad investments that we didn't understand, and when the crap start to hit the fan, I was dumb enough to buy back stock instead of raising cash. Can you believe that? I take full responsibility for this mess and, no, I'm not giving back my money."
• "My company was destroyed by mean nasty short-sellers who spread mean nasty rumors about the company, and then drove down the stock through naked short-selling. If the SEC would have reined in market speculators and manipulators, we would still be alive and I'd still have that cushy leather desk chair."

I'm going to go out on a limb and suggest that Fuld's explanation will be mainly the latter. But take it with a grain of salt: when former Enron CEO Jeff Skilling was hauled before Congress to explain that company's collapse, he said that "It is my belief that Enron's failure was due to a classic run on the bank, a liquidity crisis spurred by a lack of confidence in the company."

But the reality is that Enron and Lehman filed for bankruptcy protection because they didn't have enough assets to cover their liabilities. Period. And it's wrong to blame that on the few short-sellers who were prescient enough to see through optimistic and misleading "forward-looking statements."