Jayson Williams‘ estranged wife, Tanya, has joined the cast of VH1’s “Basketball Wives: LA” and says she’s so far shot three episodes while navigating divorce proceedings. “I signed on to participate in the show to elevate the negative perception . . . that [it] is purposely filled with flighty, overly emotional and sense lessly dramatic women,” she told us via e-mail. “Yes, my life is chaotic, dramatic and surreal, but I am also a businesswoman.” Former Nets star Williams is behind bars for assault in the death of a limo driver and is up for parole next month when the show premieres.