Hi,
First of all, OpenVZ do not allow loading or listing kernel modules within containers so you will not be able to load modules within. You have to load these modules on the node.
(https://forum.openvz.org/index.php?t=msg&goto=29812&)
If you enable fuse for a container, then to verify if its really enabled is to check the output of within container:
ls -lah /dev/fuse
If you get the fuse device listed, that means FUSE is enabled for that container.