Co-mission ordinations - were they illegal?

http://www.evangelicals.org/news.asp?id=247

[EV News] November 15, 2005--Since the ordinations last week in south London questions have been raised about the status and validity of the action, not least by the Bishop of Southwark in a letter addressed to clergy in the Diocese. The Bishop makes reference to the Overseas Clergy Measure and appears to argue from this that the ordinations were illegal.