HIS lawyer will tell you that it is impossible.
YOUR lawyer will get paid claiming it is not only possible, but a 100% certainly.
An engineer will tell you that it is likely.
Can you find "any" evidence of movement of "anything" else by 1/2 to 2 inches nearby the building, the street, OR the pipe: curb cracked or dug out, steps moved or settled (or maybe raised), a walkway or sidewalk now cracked, a tree crooked or leaning or dead, lines or cracks in the soil, a sign or USPS box tilted? The soil moves first, THEN the pipe moves to relieve the stress that has been increased, then the pipe cracks.
Any evidence of the building moving? Brick cracks most likely? Doors now jamming or not closing, air leaks, paint stars or cracks, windows not opening? ANYTHING that shows movement is evidence of movement, which is evidence of that the pipe cracked because of movement. (Doesn't "prove" that the road construction caused the building movement, but it establishes the building did move.)
Go open and shut windows and closet doors and look for gaps and for interior paint problems near the ppipe entry. Take photos and document the findings for your lawyer.