And with another Englishman starring -Dave Walder added 18 points with the boot - Hanks is pleased with how Pool Six now looks as they leapfrogged the Warriors into second - two points behind Toulouse.
"We're rapt," he said. "It puts us in a better position in the pool. This was a huge game that we had to win to stay in the pool.
"If you look at all the other pools and scenarios they're all quite tight. You can't afford to be none from two at this point.
"We're rapt to take a bonus point - we respected Glasgow too much to assume we'd get that.
"Scoring three tries by half-time meant we weren't as patient in the second half. Glasgow are a big, physical side and are quality opposition. That makes the achievement bigger.
"Our defence did well to hold them out in the final 10 minutes because it could have been quite hairy had they gone over."
Elsewhere Leicester downed Scarlets 46-10 thanks to tries from Martin Castrogiovanni, Ben Youngs, Tom Wladrom, Tom Croft (2) and Geordan Murphy, with England scrum-half Toby Flood kicking 16 points.
Bath and Northampton collected wins against Aironi and Edinburgh respectively while Saracens lost to Leinster 25-23 and London Irish fell 27-16 at Ospreys.