Has far has I know the engine doesn't support it, but the multitouch extension does support dragging of entities.

I think you could attach two invisible entities to your box, enable multitouch drag on them and try to adjust the angle of your box respectively with the x,y position of both of the box

That surly not the easiest solution, but I think its feasible

http://code.google.com/p/andengineexamples/source/browse/src/org/anddev/andengine/examples/MultiTouchExample.java

As far has I know the engine doesn't support it, but the multi-touch extension does support dragging of entities.

I think you could attach two invisible entities to your box, enable multitouch drag on them and try to adjust the angle of your box respectively with the x,y position of both of the boxes.

That's surely not the easiest solution, but I think it's feasible.