That'll go back in it's not a problem. But can't get even a thin wall socket on that nuts you see.
I also tried to loosen the 3 torx bolts on the casing that holds that part on the shaft but even a good s/o socket started slipping off.
I'm buggered if can get it out, everything went good till that.
If you just want to take the box out, cut the clamp on the tulip boot and separate there.
To take the inner shaft out you have to undo the bolts on the plate behind the tulip. This plate holds the center bearing in the housing and the bearing holds the shaft into the box.
I've done it on a M32 'box on a Croma with normal spanners / sockets. You might have to use a crowsfoot spanner on a square drive extension. Even with plate off I had trouble due to corrosion between the steel bearing and alloy carrier. I had to heat the carrier with a hot air gun to get the bearing and shaft. out.
The bolts holding the bearing carrier to the box are RIBE not Torx. Removing them won't help anyway, there is a dowel between the box and housing. That and the inner shaft stop the shaft or carrier coming off even if you take the bolts out.
Robert G8RPI.