They were pretty low and had a good sink rate going at the time of the ejection, so I'm not suprised there was an injury sustained during or after the ejection. If you're high enough, you can do stuff like remove your mask, steer into the wind, fix certain canopy malfunctions, etc. If not, you pretty much punch out and whack the ground whether your ready to or not.
Good decision to eject, but given their low altitude the radio call was (on hindsight sitting in my chair at home) probably a mistake. The tower didn't even hear it properly, asking them to confirm that they were "breaking out to the north" after the pilot said "ejecting to the north".
That's one reason why the T-37 was our primary trainer for so long, and why the T-38 is going to be in service for another 20 or more years... One engine failure doesn't usually result in an ejection.