Pretty simple to figure out what happened.

Sumida was at the meeting on Wed., but didn't answer any questions.  The Comm. met for 2 hours Wed, and decided to hold-off any decision, and come back on Friday.  

Sumida was not at the meeting on Friday.

The pretty easy conclusion is that Sumida offered the Chief's retirement on Wed., with certain conditions.  The Comm. needed time to discuss the conditions with the necessary powers in the City & County since the Comm. doesn't have authority over some of the financial interests that might be involved in determination of a retirement calculation.  So they accept the offer in principle, subject of getting answers from the Corp Counsel's office.  So Leong comes to the meeting on Friday, but not Sumida, and says the deal can be worked out.  

Sword announces retirement without Chief or Sumida present, details pending.