I also see the announcement as very good news with a solid...

I also see the announcement as very good news with a solid foundation and an ongoing commitment by the company to move ahead. Put these latest results together with the POC results of the C-Diff and the bigger picture is starting to emerge.
I am sure some SH were wanting more from the announcement, but my money is still there for the long term benefits of this unique treatment.
Just as a footnote to all the stock movements, I note that the selling of IMC shares has generally been very small parcels. The smart SH that haven't sold-out are also probably the ones that don't have margin calls or loans against their shareholdings.