Scenario of disabling and then enabling validator doesn't seem to work

[eyurchuk]

Hello Minege! First of all, wanna thank you tour python implementation of eSSP, saved us lots and lots of time. Great work!

Although, we've currently got a problem when we disable_validator() and then, when the machine should be activated, enable_validator() sometimes doesn't enable it, and even if it does, we continue to see "Poll Disabled" in logs each time in event looping.

Could you propose a code snippet to correctly disable and enable validator, each time returning to a valid working state? Would be awesome thank you.