In a satellite image by Landsat 8 taken on the 31st January 2018, a thermal anomaly is present inside the summit crater of Mount Michael on Saunders Island. It is clearly an indicator that some elevated activity has been taking place inside the crater of Mount Michael.
In my opinion, I believe some low level strombolian activity has been occurring or at least a lava pool is present on the crater floor.
Activity inside the crater of Mount Michael Volcano. SOURCE: Landsat 8/USGS/NASA.