Head strikes will depend on how the image printed out. If it was coming out where the mark hit on the left side, it may have happened when going back across the print back to the right side of the housing. The ink will be laid down both ways. After going from right to left, it will go back (left to right) to lay down the rest of the path and complete the section before moving onto the next section of the print; or you can consider it has a pass. This very well "could be a head strike", but if it hasn't happened on anything else but the one print, it may be the image file.
As mentioned, it really depends on how it happened and if you used the proper media type, it should help upfront. If it's a pretty thick media, best option would be to work with the head height and vacuum setting so it will lay flat enough to apply the ink during passes.
But how many images have this issues or is this the only one so far? If the only one, have you attempted other prints to verify if this is what's printing? Maybe try another image on the same product (if you haven't already) to confirm if it is the file itself or actually an issue in the printer or the media directly.