Thus East Germany probably can be added, along with Poland and Hungary, to the list of East European states that are trying to abandon orthodox Communism for some as-yet-nebulous form of social democracy. Could the Socialist Unity Party, as the Communists call themselves in East Germany, lose in such balloting? “Theoretically,” replied Gunter Schabowski, the East Berlin party boss and a Politburo member. On the same day that East Germany threw open its borders, Egon Krenz, 52, President and party leader, promised “free, general, democratic and secret elections,” though there was no official word as to when. And that, supposedly, was only the start. Both East Germany’s Cabinet and the Communist Party Politburo resigned en masse, to be replaced by bodies in which reformers mingled with hard-liners. Many who served the regime that had built the barrier dropped from power last week. Nor was the Wall the only thing to come tumbling down. As the daily BZ would headline: BERLIN IS BERLIN AGAIN. They spilled out into the streets of West Berlin for a champagne-spraying, horn-honking bash that continued well past dawn, into the following day and then another dawn. They brought out hammers and chisels and whacked away at the hated symbol of imprisonment, knocking loose chunks of concrete and waving them triumphantly before television cameras. They tooted trumpets and danced on the top. West Berliners pulled East Berliners to the top of the barrier along which in years past many an East German had been shot while trying to escape at times the Wall almost disappeared beneath waves of humanity. 9, a date that not only Germans would remember, thousands who had gathered on both sides of the Wall let out a roar and started going through it, as well as up and over. What happened in Berlin last week was a combination of the fall of the Bastille and a New Year’s Eve blowout, of revolution and celebration.