Upgrade compatibility level on single hypervisor RHV 4.2 to 4.3 with hosted engine

I just finished upgrading my RHV 4.2 environment to 4.3. There is one last step I need to do, which is changing the compatibility level for the cluster. I managed to do that on the previous upgrades, but this time it seems to be a bit of a catch 22. I only have a single hypervisor (although it is a pretty large one) with a self hosted engine for RHV-M. I cannot set the compatibility level to 4.3 because there still is an active VM, i.e. the hosted engine.

The error is:
Error while executing action: Cannot change Cluster Compatibility Version to higher version when there are active Hosts with a lower version. Please move Host mc106 with lower version to maintenance first.

I cannot move it to maintenance since it is running the hosted engine and it has nowhere it can relocate to.

Has anyone found a way to deal with this?