He was a successful able-bodied curler for much of his career until he had to stop playing because of bad knees and a car accident in 2003.

[2] Armstrong won the Ross Hartstone Award at the 1983, 1987 and 1992 Briers for being the most sportsmanlike player as voted by the other athletes.

Armstrong travelled as skip with Team Canada to Chuncheon, South Korea for the 2012 World Wheelchair Curling Championship, but returned to Canada the day before the tournament began after receiving an 18 month ban for failing a doping test.

[3] After appealing to the Court of Arbitration for Sport (the "CAS"), Armstrong's ban was reduced to 6 months since "the WCF Panel did not properly exercise its discretion".

[6][7] Armstrong and his son were arrested in April 2010 for trafficking counterfeit goods after he was accused of smuggling Chinese-made pills labeled Viagra and Cialis into Canada from Washington.

Armstrong pleaded guilty in October 2010 and had to pay a $30,000 fine as well as perform community service, while his son was "banned" from the University of B.C., and got one year and one day in jail.