Is my extruder badly damaged?

I have a 3d Touch, and left a print running unattended last night (after a couple of weeks of having almost no trouble, and a successful 53hr print last weekend).  It looks like somehow the print got badly mangled (I think the raft folded over on itself) and ended up gouging two ~0.5cm chunks out of the insulation around extruder #2 (see attached picture).  My question is: Is this a significant problem?  I've run a small test print since then, and it looks like the extruder is still working fine, but I'd like to know if this will cause any non-obvious problems.