This response seems incomplete. Not a Grindr user, but isn't it the case that, having set up the profile, the manager can see how often his employee is on there at work? The suburban-house thing might have been the manager tracking the employee's proximity, too, as he was expected at the meeting.

If it's possible to block on Grindr, the employee should do that and never, ever have that screen up at work in case it's noticed again.

There is no good reason to open Grindr at the office. Don't do that. Leave the building.