Footy hang-over?

Our local football club is usually a power-house of the Essendon and district league premier division ... but, this year finished the season in seventh place on a ladder of 10 teams. No sooner had the season ended, than portable high fencing was brought in to surround the city oval before heavy earth-moving equipment moved in to start excavating the entire playing surface to a depth of approximately a metre.

No reason for the work has been announced by either club or municipality. Of course, we hope it is merely a refurbishment of the playing surface, which I can't recall having been done during our 40+ years in the district. But, I can't help myself from considering the possibilty that it may be a knee-jerk reaction to a less than an appropriate effort during the late season ...?