Each sitch is different but I say apologize with your actions for now. Don't say "I'm sorry, I'll be different" ... just BE different. A word of warning - most MLCers/WASs get angry when they see your changes coming about so "quickly and easily" now. They feel like they've been trying to tell you FOREVER what they needed and get angry because now that they feel like it's too late, NOW you make the changes too little to late.
I'm not saying it IS too late, but that is the perception they will have for now. Just prepare yourself and know this is coming and let it roll off you. Make true changes for you and work at integrating them ... that's your job right now
PEI
Holding onto anger to punish someone else, is like lighting yourself on fire to get smoke in their eyes ~ 25yearsmlc