If his interpretation is correct, it would indicate that a large scale short is coming to an end.
In simpler terms, it MAY indicate an end to the alleged price suppression.
A typical head and shoulders formation occurs when the big players decide to buy large amounts of a stock. The problem then becomes one of selling it without the price falling so much that your profits disappear. Google DOW theory for a detailed explanation of how the accumulation and subsequent distribution is managed to secure profits for the 'big money'. It is a pump and dump on a massive scale.
An inverse HAS is the same thing only beginning with the distribution phase (AKA short).
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