CR touch BROKE OFF during print! / why and how to replace?

Hi all. First post here, but have been 3D printing with my boys for almost 3 years now and we have seen our share of fails. However last night was a 1st.

The CR Touch module broke off mid-print while printing a very sturdy Rocktopus. Luckily the print finished without issue, but we now need to replace the broken CR touch before we can print again.

Any advice on best way to repair or if we need to order a new CR Touch and replace would be greatly appreciated. (Pictures attached)

Also, what do you all think happened during the print to cause the CR touch to just break off? I am guessing the metal height detector stick thing lowered mid-print and got caught, but why did it lower?

Thanks in advance for any help,
DoD