"I'm very proud of that second half performance. In the first half it wasn't the rugby, effort or togetherness that we have shown throughout this season and last," admitted Townsend.
"For whatever reason we weren't switched on. We made a lot of errors in that first half, but we showed what we are about in attack and defence in the second half.
"We weren't chasing out kicks, looking after the ball or putting in the tackles. I'm disappointed because in four out of our five previous games this season we hadn't scored a try, but to have six tries scored against us shows the quality we were up against and that we didn't defend as well as we should have done.
"But it was a fantastic effort in the second half and had a few more passes stuck in the final 10 minutes it could have been even closer. What it did was show, though, was our fitness and the desire for the team to play for each other."
Glasgow face Exeter Chiefs at Scotstoun in round two and their finish in Toulon will at least give them something to build on going into that vital clash.
"A bonus point in Toulon keeps us right in this tournament, but it's important we do well next week. Exeter were excellent in the second half against Leicester and then against Gloucester.
"They had a great win today and when you start with a win in the Heineken Cup you then start thinking about being in there for the last few games. It shows they're in great form.
"We played them in pre-season but there is no way we're going to think this will be the same game. This is the Heineken cup, teams play their best and it's a step up from what we are used to week in week out."