I was the Hero on the team where this happened. Whoops! I imagine if this worked once it should be reproducible. Rest of the team were either Vigilantes/Rogues or Villains and we were in Ouro when we started. Then we were tasked with going to Grandville to actually start the SF at Recluse. I tried to stop in PD to have Null the Gull change my alignment. Due to the SF being started in Ouro, Null gave me a generic line about looking like I'm too busy at the moment. We had to quit and reform and re-meet in Ouro after I changed my alignment.
Possible resolutions:
1) Allowing alignment changes during SFs (I think this is a... uh, rather generous idea)
2) Have the SF check for alignment before allowing it to be started in Ouro (this seems more reasonable)
Always dreamed of Bug Hunter badge, my badger is Anilo on Excelsior.
This happened on Excelsior on my character Relative Generality within the last 48 hours.
Thankful as always for your work in bringing Paragon City back.