No, I didn't.
But I did read reports where the air marshalls said he reached into his bag.
See the difference?
In order to really know what happened after he got off the plane, we'd need a video of what happened in the jetway.
Otherwise, it's a he-said/she-said with one side being dead and unable to refute what the air marshall's claimed afterward.
The fact that there are several passengers who clearly contradict what the air marshalls claim Alpizar said while 'running up and down the aisles' points to the distinct possibility that they are not being entirely forthright about what happened in the jetway.
Two; two is NOT several.