I have a hard time believing that the bond issue "failed" per se. For one thing, I doubt that Glendale would go to sell the bonds before they have finalized and signed the lease and confirmed that the BOG has approved the sale. To my knowledge, neither of those things have happened. I doubt that potential investors would go anywhere near the bond issue without confirmation that the team was locked into a lease and the sale was confirmed. Moreover, it would be foolhardy for the COG to issue the bonds if they did not have the lease and sale confirmed.
If there is a grain of truth in McCown's rumour (which is looking dubious, at best) suppose it is possible that Glendale has been in discussions about the public sale of the bonds and has learned some rather unpleasant news, causing them to look at other options.
But they need to finalize and sign the lease before anything else, and they need the BOG to green light the sale, and I also think that they need some confidence that the GWI will not take them to court before they actually get to the bond sale.
Does that sound reasonable?