I don't understand how that caused several injuries among a pretty small group (staff)?

Google says front wheel is about 1.68m. High but not crazy high. Plane body and people fall at same speed and it would be slower than actual freefall since the plane is vaguely balance-ish on rear wheels

I'm sure the reporting is right but feels counterintuitive to me

My uneducated guess is that crew members in the back galley could have been injured by unsecured items they were loading falling or sliding. The service cart itself is 200-250 lbs. With the rear galley accelerating upward, then a sudden halt to the acceleration when the front nose impacts the ground, I could imagine the cart lifting off the ground and landing on feet or legs. Or putting the cart aside, other items such as drink cans, galley appliances, etc. falling from cabinets or counters could cause injury

If you are inside the cabin and not expecting, would be sliding down quite a bit.

Because the tow guy called in the problem 10min prior and the mechanics were clustered around it deciding it it was a "get a new plane" sized problem and they did something and dropped it or whatever. Someone's hand got mashed, someone got bonked on the head and the boss spilled his coffee. Meanwhile inside the cabin whoever was febreezing vomit off the wall of the bathroom reached out to grab anything that was nearby when the plane lurched which turned out to be his coworker's ass and the fake nail grazed his eye when he got slapped for that. Some asshole manager probably slipped and fell rushing to chew them all out. And another guy got a bloody nose when he crashed his baggage tractor into a parked forklift at at 3mph because he was watching the whole deal rather than where he was going but he didn't report that one so he's not included in the total.

Yeah I'm pulling all that out my ass but I bet I'm closer than anyone around here wants me to be. However mundane and stupid you think ground ops are at an airport triple that and you'll be in the ballpark.