I took a drive through the Emmerson Business Park today, and yes, with all those stakes in the ground, it does look like something may be afoot.
The image below shows where the staked off land is:
If it is indeed a "large downtown business" fleeing the core over parking concerns, this is indeed unfortunate, but perhaps this will light a bomb under city hall regarding parking concerns in the core.
The assumption is that if there is so much surface parking in the core, then how can there possibly be a parking problem? Obviously however there is. Surface parking is a highly inefficient way of warehousing the vehicles of downtown employees. Instead, we should be building multilevel parking structures, both to increase parking availability, and to free up existing surface parking space for alternate development (including downtown apartment buildings, condos and affordable housing options). This is the only way forward for the city.
Maybe the loss of a major downtown employer (if this is indeed what is happening here) will finally goad city hall into action on this issue........