I'm not sure what you're licensed for, but I think what you would want to maybe do is have VisualCron also installed on the SQL server also with that job cloned to it.
You could still use the main system to schedule everything, but the job would just have a task of controlling a job on an alternative VC server (your sql box).
Server1
Job1
Trigger: Whatever method you want (time/interval/event)
Task1: Internal: Job/Task Control
Action: Job - run Job
Add a 'VisualCron' connection to your other VC install on the SQL server
reload the list of jobs and select it.
Server2 (sql)
Trigger: no Trigger, it gets kicked off via Server1
Job1
Task1: Do whatever
Task2: Do whatever
Obviously if you're not site licensed for unlimited installs of VC, another install of VisualCron isn't going to be feasible. If that is the case, I don't think you can do what you're asking. The only way would be to use scripts of some nature, not built-in functionality, and do the remote Execute task as i mentioned earlier.
Brian