Rather than remove your US esx 3i server from the location-US VC, which might be dangerous if it is a production node, I would suggest the following:
1) if at all possible build another vmware server, even using the free server version
2) attach that new server to location-us VC and copy the template locally (should be fast)
3) detach the new host fom location-us VC and attach to location-europe VC.
4) copy the template from that machine to your europe 3i node.
I’m just thinking it might be safer to use a separate machine in case something goes wrong with removing a host from the VC and not being able to get it back in. That woule be BAD! This way there should no impact to your production hosts.
Another option may be to use the convertor to export your VM to server and then imort back into ESX at the new site.
just an option maybe!