Found it
Crime Stories with Nancy Grace
I couldn't find a direct link but it's her October 7 podcast called
BOMBSHELL: Suzanne Morphew hubby caught searching dump for missing wife's bike helmet
At 23:00 CM from PE starts explaining how MG thought BM was there at her place at 4am to pick her up & says LS can back all this up. He explains it then NG cuts him off like she does, and introduces another guest without pursuing this further.
Then at 26:00 in, it's a clip of AM speaking with Dr. Phil, and he also brings up the texting people at 4am, trying to get them, to get a crew to Broomfield. (this was the phone call MG stated that she got, where he "changed everything at the last minute") He called it "testimony from an employee" says BM was doing this. Obviously he's referring to MG here.
So, I do believe this is what MG told LS.