Schreiber appeared for the fourth time before the Ethics Committee on December 11. He stated that significant funds from West German sources financed the 1983 Winnipeg ouster of Joe Clark as Progressive Conservative leader; Clark had called for a leadership convention, which led five months later to Brian Mulroney winning. Schreiber said he contributed $25,000 himself, and that the late Franz Josef Strauss, Airbus chairman and former Bavarian premier, added a similar amount. Schreiber also raised the possibility that Strauss's political party, the Christian Social Union, may have also given substantial funds. It was already known from 1983 that Walter Wolf, the Austrian-Canadian businessman and entrepreneur, had by his own admission also contributed $25,000 for this project. Mulroney had quickly distanced himself from Wolf following that admission. The money was used to transport and house many pro-Mulroney delegates, who voted against Clark, narrowly denying him sufficient support to continue as leader, despite a large lead over the governing Liberals, led by Pierre Trudeau, in the polls.
A series of successful burglaries in Montreal in 1984, which targeted files on financial contributions to the Mulroney camp, held in the homes and offices of Walter Wolf, W. David Angus, Roger Nantel, Rodrigue Pageau, and others, eliminated most if not all records of the German cash, along with material on others' contributions. Despite police investigation, none of the burglaries were ever solved.
Schreiber also stated that he transferred at least $5 million from his deals to the lobbying firm Government Consultants International, which had three senior Tories, Frank Moores, Gerald Doucet, and Gary Ouellet, as part of its management team; all three men had close ties to Mulroney. This money came from firms Airbus, MBB, and Thyssen, which Schreiber was representing for Canadian projects.
The Globe and Mail reported on December 12 that money from Strauss had also financed Moores to the tune of several hundred thousand dollars in the early 1980s, through purchase of some of his isolated rural land holdings in Newfoundland.
On December 11, following his testimony before the Ethics Committee, Schreiber was interviewed by Peter Mansbridge, anchor of The National newscast on CBC Television. Schreiber told Mansbridge that Franz Josef Strauss had a policy of helping to elect conservative-leaning governments around the world, by financing their campaigns, and that the Canadian case was just one example. Schreiber also told Mansbridge that Mulroney knew that the $300,000 in cash that he received from Schreiber from 1993-1994 was coming from the Thyssen account, and that the arrangement called for Mulroney to lobby on behalf of Thyssen to develop the Bear Head project, once he stepped down from office as prime minister in June, 1993. Mulroney did not tell Schreiber at that time that the Bear Head project, which had in 1988 received initial Cabinet approval from three ministers, as well as the Nova Scotia government, was cancelled in 1990. Schreiber said he had met with Mulroney and cabinet minister Elmer MacKay at the prime minister's residence, 24 Sussex Drive, in March 1993, to discuss the Bear Head project. This contradicted Mulroney's sworn statement made at his 1996 libel trial that he had had no business with Schreiber. Schreiber said that no receipt or invoice was issued at the time for the C$300,000 deal with Mulroney.