Stonehenge Altered in Roman Era?

The results are way too preliminary from ongoing excavations at Stonehenge, but there does seem to be some evidence that someone in Roman times modified the monument. Quoting Current Archaeology:

However the most surprising discoveries so far have been Roman. In a small pit
containing a small bluestone in the corner of the trench, itself cut into the
main socket of one of the uprights, they found a Roman coin. Even more alarming,
was the excavation of the large pit in the centre of the excavation, where right
near the bottom they found a very small piece of what was indubitably Roman
pottery. Was there a major reordering of the site in the Roman period? As
Geoffrey Wainwright said, their small trench looked like an urban excavation,
there were so many intercutting pits.

This could be some form of turbation or other taphonomic process. But it is certainly interesting.