(Updates after Yang, Hend finish) By Tony Jimenez VIRGINIA WATER, England, May 27 (Reuters) - Danny Willett veered from the sublime to the ridiculous, following a record 29 on the front nine with an inward half of 39 as he shared the second-round lead at the BMW PGA Championship on Friday. The U.S. Masters winner surged to the top of the leaderboard alongside South Korean Yang Yong-eun (69) and Scott Hend (69) of Australia after a scintillating burst of scoring on another sunny day at Wentworth that yielded six birdies in seven holes to the ninth. The journey home was a completely different story, though, as Willett frittered away stroke after stroke before a birdie at the long 18th gave him a four-under-par 68 and a 10-under tally of 134 at the European Tour's flagship event. More...