In regards to the roster, it's definitely the 89-90 Lakers. Stan Winston's website posted that picture above.
But also, in February 1990 principal photography started for Predator 2. For the life of me i can't remember when it ended. May or June 1990 I believe - I have to hit the scifi magazines again for a refresher. The movie came out in the U.S. in a big rush in November 1990.
And this is when the 89-90 Lakers team played:
November 3, 1989 – April 22, 1990 (Season)
April 26 – June 3, 1990 (Playoffs)
The Lakers lost late in the playoffs and missed the June 5 – 14, 1990 Finals that year.
Hmm. Maybe pulling individual pics of these players may help in photo matching.