Why don't Tokamaks blow up whenever they lose confinement?

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SUMMARY

In tokamak fusion reactors, a quench in the magnetic coils leads to a loss of confinement, but this does not result in an explosive reaction. The plasma does not reach the necessary fusion density before confinement is lost, preventing sustained fusion reactions. Instead, the plasma's inertia causes it to escape the magnetic field rather than compressing further, which mitigates the risk of an explosive event akin to an H-bomb detonation.

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nlieb
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I haven't been able to find an answer to this anywhere. Suppose there's a quench in a coil at a tokamak and confinement is lost. I understand that there is no longer anything keeping the fusion going, but it seems to me that the plasma should still have enough inertia that, however momentarily, fusion would continue occurring, and the whole thing would go off like an h-bomb. Obviously this doesn't happen. Why?
 
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The plasma hasn't reached fusion density yet when the containment is lost hence it doesn't fuse. It is resisting being compressed to that density and squirts out of the containing magnetic field.
 

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