NO!! That's very, very dangerous. The student might think it was a control restriction and overcontrol as a result. The ONLY safe method is the well-proven 'IHC/YHC' mantra.
Whilst I agree this needs to be done with caution there are times I do not want to take it off the student, if I call IHC then he takes his hands off the controls, in the case for example of a student who is bouncing (mainly tailwheel courses), it can be quite effective to stop the bounce where it should be at the same time explaining "
This is where you need it - you have control", because I explain WIHIH he knows what is going on and there is still the correct hand over back to the student who still has his hands on - a technique I have been using with no problem over many years when needed (though kept to a minimum).
