Thank you @G.J.S and @Zabuzard, I was able to get my fav modual back.
I saw in the linked discussion there is a suggestion to make the entire DCS directory excluded from the virus checker. Someone added in that thread that there have not been any reported real virus attacks via DCS. To that all I can say is there's always a first time.
Instead, I let my guard down but for only the one file that was quarantined. The heatblur file. I looked it up in quarantine, and selected the "restore and add exception" option. This way, I was only taking a chance on one file. And it worked!
flameoutme's post in My F-4E Went Missing in DCS was marked as the answer