Since I had young children at the time of the trial, I couldn’t help but note that OJ was holding his hand like a 3 year old, trying to get the glove on while holding his fingers mostly apart. That’s what kids do, when they either don’t know how to get their winter things on yet, or just plain don’t want to wear them...
With that, and the natural leather shrinkage from the blood, of course he “couldn’t” get his hand in it. Cochran didn’t even need to tamper with it.
Yup, that was my take at the time. He was obviously trying to make it look like it wouldn’t fit. If the glove was tight fitting to begin with and had shrunk even a little, this would have been easily. Its also possible that OJ had taken something to swell the size of his hand.
The whole glove incident was stupid, but I don’t think it made a big difference either way. The evidence was clearly against OJ, especially the DNA evidence. Everyone knew he was guilty. The jury just didn’t want to convict a celebrity Black man of kiling two white people. Its that simple.