Many a citizen would love to be a fly on the wall when government engineers at Metrolinx and their counterparts at the construction-firm consortium called Crosslinx Transit Solutions discuss the mysterious “defect” under the Yonge and Eglinton Station. Whatever its precise nature, the so-called defect has blown away the schedule for completion of the Crosstown LRT. The $5 billion transit line will open — it is hoped — sometime in 2022, but just how confidently anyone feels about that seems draped in shadow. Friday, there is a story that Crosslinx is proposing that the LRT open without the Yonge-Eglinton Station but that Metrolinx has yet to agree.