If you read Cramer's book(s), he admits that he cannot possibly memorize the data for 2000+ stocks. He often makes calls based on the sectors of the stock. He further recommends that people do their own dd before investing in a stock (or not). Unfortunately, many people don't bother to question his advise and thus we see the "Cramer Effect" when he mentions stocks.
Obviously, it sucks when he trashes what appears to be a great company like Dynamic. Fortunately, the "Cramer Effect" is usually short-lived, even though it doesn't help with the volatility of stocks. As if we needed any MORE volatility these days!
Thanks to real_sugardad for posting the IBD article which should help cement our belief in this stock