AP reported that the MM 48 hour clock didn't start until the staff was able to show MM an informational video about entering the portal. None of us know when that happened. Probably wasn't Sunday night. So AP said we may not get a YES/NO from MM until later in the week due to the holiday.
Also, it would make the most sense for MM to wait until the last minute before declaring one way or the other. The longer he waits, the more offers he could receive via back channels. So IMO he will wait until the staff tells him the 48 hours is up and they have to enter him in the portal. At that point he will declare one way or the other.