there are more, not sure if I saw anyone not a laker or knick but seems like a popular thing. And DeBuschere did it for several years..

I found this

As with the previous two Topps issues, some NBA players appear to be wearing their jerseys backwards. Though it hasn't been confirmed, the popular belief is that if the jersey displayed the team's nickname or logo, then the player would forfeit their fee from the card company to the team. The same scenario didn't apply to ABA players. Many of them are photographed in jerseys exhibiting their team nicknames.