not sure what pressure a CRJ tyre is put under, but its no bigger than a kiddies bicycle tyre, even smaller perhaps,
Might only be that size still deadly. I was about 10 feet from a piper aztec wheel that let go years ago - aircraft jacked up had trouble getting the retaining nut off the axle. when the retaining nut finally came off, there was a hell of a bang at which point the whole wheel left the aircraft, one half of the wheel hub cleared the hangar without touching the floor hitting the hangar wall about 50 feet away leaving the wheel about 10ft from the aircraft. the tire was about 2ft high lying on its side with the tube still inflated. cause ? the 6 wheel hub blots all sheared, only the axle hub bold holding the wheel on.
An aztec tire is all of 30 ish psi and about a foot in diameter ... so I will let you guess what a couple of hundred psi and a larger wheel can do.....
I just hope the guy is ok at the end of it