forge hangs on AbstractProjectCommand.getSelectedProject() when used inside fabric8-forge (the REST service)

Here's a stack trace:
https://gist.github.com/jstrachan/741d65b7dd87ca0e701e

when using Forge from the hawtio console, the JVM seems to hang for 1-2 minutes now inside the call to AbstractProjectCommand.getSelectedProject(). Whats odd is I can create an archetype and invoke this code path on startup just fine - but then thats in a different thread to the one using Forge from inside the JAXRS service; so am wondering if its related to which thread is being used?

Seems to ultimately be a wagon / aether issue; taking too long to download things.

Wonder is there any way to configure the maven addon in forge to register a Wagon listener maybe? No idea whats causing the pause