Contest puzzle! Francis Heaney's "Going Way Too Far" is 4/5 difficulty. You can theoretically solve it in Across Lite, but on paper or using the .jpz file is strongly advised instead. Instructions below:
In this puzzle, some entries are one letter too long to fit in their assigned space, and must extend into one of the grid's gray squares. Some other entries are *two* letters too long, and will break through a gray square and into the square beyond it. Each gray square will be used exactly once, and the letters in them (reading left to right, line by line from top to bottom) will spell a clue to a final answer; the letters that break through the gray squares will reveal who's responsible, and help confirm the final answer. Send this answer to firstname.lastname@example.org by midnight on Sunday, June 16, for a chance to win a prize.