2♦ by system is 4+4+ majors, weakish, and was alerted, then announced as such when asked by S, who was unhappy that W then passed out 2N. This went -2 when S showed up with ♠AQJ10xxx, NS can make 2♠, no more.
Presumably W will show bad hand or bad hand bad suit whichever he plays if he thinks he's playing a weak 2, and then what does E do ? Knowing the players I suspect their arrangement for weak 2s would be fairly classical, so this is already a bent bid, and E should be bidding 3N.
Sorry I mistyped, should be UI rather than MI.