I think what likely happened here is Garver went in there hard, knowing he was gonna be out and intentionally slid to the fielder side of second, but realized a bit late he was going too far and tried to hold himself up, and failed.
I dont think there was intent to contact the fielder, but he defitnitely failed to try and maintain contact with the base with his slide. He then also ended up grabbing the fielder just as his throwing motion was over. So while it wasn't a dirty slide, it was against the rule as written.