Possible Clues:

• Explosively unstable
• Relating to eruption in earth's surface
• Is capable of fiery outbursts returning most of the love to accountant from Ulster college
• One of those on the radio with headphones briefly in charge of one of those likely to blow top
• Like some ash
• Hot stuff returns most of the love to accountant from Ulster college
• Liable to erupt
• Inclined to blow one's top
• You can't say that what comes out this way is not so hot
• Explosively violent