Tom Feeley, who is the one man band behind this outfit, suffered a stroke.
His own words on the episode can be found here
Tom Feeley wrote: On Monday the 21st of April I had a stroke. As a result I had been hospitalized for almost 3 weeks.
I am very happy to report that I am making great progress in my recovery and the doctors say that I should be back at work fully functioning within the next Month.