Ive been turkey hunting for 20+ years and just about every day out hunting I say "I shouldve stayed there, or I shouldve moved on him, shouldve called softer, shoudve called more aggressive, shouldve gotten closer to the roost, shoudve stayed farther from the roost, and so on.
What works one day doesnt always work another. But you're right in that you shoudve stayed put. If a bird is gobbling and coming to you and then shuts up, he is proballly still on the way. Or the hens have intercepted him. Ive found that staying put is usually the best bet.