Possible Clues:

• Coalpit feels wrong - as if this might happen
• Time in Boston for two sides and slices of crumble
• Emotionally crumble (3 words)
• Lose one's emotional or mental composure
• Collapse in Boston after the summer on the way to find constituents
• Become emotionally upset, in a state of collapse following onset of fire
• Collapse
• Come apart completely
• Left as police (anag) — lose emotional or mental composure
• 'I ___' (tune for Mr. Potato Head?)