MWP's comment actually seemed backhanded. He basically just said the Grizzlies were better than they showed and insinuated that the Spurs were lucky they didn't "try hard enough".
As for mutual interest in MWP. . .yeah maybe. . .3-4 years ago. Now? Nope. Slower, ty BBall IQ, can't hit the three. Next to useless in Spurs' system, and is arguably a negative because he runs his mouth too much, jacks bad shots more than anyone on the current Spurs, and his salary would be better spent elsewhere (a real backup PG or replacement for Bonner)