Yes.
Fisher met the challenge of Charlotte's small-ball lineups the same way he handled Cleveland's Kevin-Love-at-the-center unit last Thursday, by rolling with a foursome of Pablo Prigioni, J.R. Smith, Iman Shumpert and Carmelo Anthony to close both games. He mixed and matched with the center position, using Amar'e Stoudemire on Thursday and Samuel Dalembert on Sunday (with a sprinkling of STAT for offensive possessions).
Unless they're facing a team with two post threats, like Memphis or Chicago, this is a pretty damn ideal closing lineup. J.R. takes some of the scoring burden off Melo, and the two wing players are strong enough on the boards to make up for the lineup's lack of overall size. It shouldn't come as surprise that this unit worked against two playoff contenders -- it's been working for years.
Honestly, I was more impressed with Fisher's strategy for guarding Jefferson. Yes, Big Al got his points -- 21 points on 9-17 shooting -- but most of that damage was limited to a hot stretch in the second and third quarters. Jefferson finished the game shooting 1-5 for two points over the last 21 minutes of play.
As Jefferson was tearing through the Knicks' D in the beginning of the third quarter, I started having terribly Woody flashbacks. Surely they will start sending way too much help, and the entire defense will fall apart, as usual.
That didn't really happen. Fisher adjusted his defense by not adjusting his defense. He simply trusted his big man to improve his defense on Jefferson, without help. And it worked.
Please do not write what you would have done... or would do... you are sitting in front of video monitor.