I have no doubt the changes we are seeing is linked to climate change from CO2. The receding artic and antarctic and moutain glaciers are proof enough.
hate to burst your bubble but glacier advance and retreat is a trade-off between melting (warming) and addition of snow which becomes ice (precipitation). It is as possible for glacier advance to happen when temperatures are warm if precipitation is high during winter months as it is for glacier retreat to occur when precipitation is low and temperature are cold. This has been well documented in the literature for decades.
When we were getting all that nasty snowfall a couple of years ago the AGW advocates were arguing that the models predicted more precipitation in a warming world. That being the case then it is entirely possible that AGW could result in glaciers advancing not retreating.