Initially, it is beyond curious that a buyer, acting through a trust, buys
property for all cash, no contingencies, days after the death of a former owner,
without offers or counter-offers, no escrow, and no title. In today's
vernacular, “What's up with that?”
Stop trying to be cute! The law is not cute. Lawyers are not cute, nor are briefs. Accept it and move forward. Counsellor, you will then realize that there is no reason to say "What's up with that" in a brief.
Excluding historical linguistic analysis and possibly a few other contexts, "today's vernacular" is generally redundant.