Warriors' 6-0 Scotstoun reverse at the hands of European champions Leinster proved one of the most disappointing nights of Toony's tenure.
Glasgow's woeful kicking after the break resulted in three missed efforts from Peter Horne (2) and Scott Wight, all of which should have been converted, and despite a dominant second-half performance, Warriors were left empty-handed.
Townsend has vowed that his men will bounce back from this struggle, saying: "We had the chances and possession after the interval to turn things around but sadly we did not make the most of it. I could not have asked for any more from the boys but we need to be a bit more clinical.
"There was a great deal of frustration at losing the game and our winning run, and it is vital we channel that into getting a positive result at Munster.
"Games like that are all about making sure you learn. There was a very fine line between success and failure."
Warriors remain third, two points ahead of Joe Schmidt's side that beat them, but the Glasgow coach will have been disappointed with both his side's lineout and kicking.
All too often in the second period Glasgow's lineout throw went askew, but at least Duncan Weir's likely availability for the match in Munster will give a massive boost to the kicks of the men in blue.
Townsend was far from downcast about his team's prospects.
He said: "I thought we defended very well in the first half, but we didn't capitalise on the pressure we had in the second.
"We dominated the territory in the second forty, but found it difficult to string more than three phases of play together. We made some mistakes, whether of our own making or through the weather, but I thought it was a game we could have won."