Glasgow's six-game winning run came to a disappointing end in a dour 6-0 defeat at Scotstoun.
Chris told the Evening Times: "There was an awful lot of frustration in the dressing room after the Leinster defeat. It all came down to such fine margins, and we had more than enough ball and territory in the second half to overturn the six-point deficit and get the win.
"But what we have to do is use that frustration to fuel our determination at Thomond Park on Saturday.
"There is not too much wrong with us and, at this level, it all comes down to fine margins. We feel we are hammering on the door in the big games, but it's just not giving.
"That has to change on Saturday. Right now we are third and Munster are fourth and trail us by two points.
"So it's vital we get the win that will damage them and help us consolidate third place and extend our lead over them.
"Plus, to get a win at Thomond Park would be a huge boost going forward into the Heineken Cup double-header with Castres. So this is just a massive game."