I would not let your H get away with being so rude to you on the phone. Honestly, K doesn't even know who he is thru the phone anyway.
MIL...she is playing both sides of the fence. I would not initiate anymore contact with her. Don't send Monday pics. Like someone told me if exh or MIL want pics they can see her themselves and take them. They are enabling his bad behavior and they are toxic to you.
Glad K had a good bday!
Me: 46 FWS: 36 Married and Divorced 4/07, Pregnant 7/07,False R 7/07 Baby Girl born 3/08 Kicked him out because OW: 7/08 5/10 He realized what he had and lost. Moved home! REMARRIED 3/14/11!!