two of those years gave him full run of Congress
Nope, unless by "years" you mean "months". Actually it wasn't even a full 2 months.
The Democrats only had a supermajority in Congress between July 7, 2009 when Al Franken was seated in the Senate, and August 25, 2009 when Ted Kennedy died of a brain tumor.
Ted Kennedy represented Massachusetts in the Senate, so when he died the then-governor of Massachusetts, Mitt Romney, appointed a Republican to replace Kennedy and the Democrats lost their supermajority.
Kennedy had been suffering with a brain tumor for more than a year, and towards the end during that period of supermajority he was not well enough to attend most Senate sessions and only voted a few times.