Following a meeting of the Ard Comhairle on 5 December, Flynn and others went for drinks in the Flowing Tide pub at the corner of Sackville Place and Marlborough Street in Dublin.
After the botched assassination attempt, Steenson then unsuccessfully threatened Seán Flynn for his seat on Belfast City Council.
Later, on 25 January 1982, a botched attempt was also made on Seán Flynn and Bernard Dorrian at a bar in the Short Strand area, provoking a feud where a unit from the Derry INLA came to Belfast searching for Steenson.
[13] He argued in letters, written while he was in prison in the early 1980s, that the INLA had become militarily "inefficient" and that the IRSP leadership had become "ineffective" and required 'realignment'.
A ruthless and highly dedicated, resourceful and indefatigable planner of criminal exploits who did not hesitate to take a leading role in assassinations and other crimes".
Henry McDonald and Jack Holland write "Both his friends and enemies spoke in a tone of awestruck at his paramilitary abilities".
[18] On 14 March 1987, Steenson and Tony "Boot" McCarthy returned to Ballymurphy after a night of drinking which was cut short by anger over the INLA GHQ faction's show of force in the Divis flats earlier in the day.
After bringing their car to a stop on Springhill Avenue, they were killed in an ambush by an INLA active unit, with a member of the ASU closing the security gate at the top of the street to trap the pair.