Wow just wow. I have been a developer and presenter of PD for 17 years. I have experienced some of the behaviors you describe as I have delivered some of my offerings. But not for long, not after I get their attention and get them engaged in the activities I have planned to fully model the integration of the practices I encourage them to use with their students.
I would encourage you to be more assertive in demanding more effective PD from your administrators. If they are okay with PD being delivered by powerpoint and paper handouts, and unruly teachers sitting at the back of the room passing notes, then those admins are not your advocate.
Last point; you are the leader in your classroom. You can make the changes for your students you know they need. You do not require a PD specialist to tell you its okay. Take charge. Make the lessons relevant. Take the time to create real world scenarios where learning the content becomes the natural consequence of moving through the scenario you have created for them. Better yet allow them to create the scenario as they think it would play out in the real world and then have them test their theories. Your classroom is their real world, for better or for worse. Make it for the better.
For a very reasonable fee I would be happy to come and consult with your school district on how to develop an effective and worthwhile PD process.