Have proponents of the expansion been lying?

http://way2gosd.com/2015/02/20/falsehoods-and-misrepresentations-why-indeed-why/

"We get to the $70 million price point when we add the estimated' order of magnitude' SWAGS of $30,640,659 for general repairs and updates (click here to see the estimate), far beyond what is necessary to address the ADA violations. Look at the estimate and you will see that it includes sound system upgrades, a kitchen remodel and expanded storage, stage equipment, sport flooring, and a stage and back stage addition. The $70 million would get us a brand new arena, for uses which might or might not be in our citizen’s best interest.
The next alarm is the claim that if we don’t approve the plan as presented to us, we won’t have sufficient time to complete the repairs required by the DOJ settlement—a settlement that has not to this date been signed by the DOJ.  Even if the Mayor’s 'deal' did exist, look for yourself at the required actions listed in 'Attachment A' of the supposed DOJ settlement.
These actions can easily be completed with a separate design and bid contract within the next twelve months. They must be completed by the deadline whether we build a new arena or not—building another arena during that timeframe just complicates the matter."

This is a very compelling article with a lot of documentation.  Well worth considering.