He did put out that he'd Verti Drained but did say he did the whole track. In the past Goodie had done only parts in an attempt to even out the track which would only cause more problems.
Personally I wouldn't do it the week of the meeting but no issues prior to that. I say that as normally they would use the larger size tynes.
Do not do it
A very astute observer confirms the warning about 'aeration'
As for the Verti-drain, ask any golfer what they think. They say the greens are dreadful for three months (but great after that).
Who ever wrote that has no idea what they are talking about.
Major renovations (historically spring & autumn) would see the greens back to perfect in around 5 weeks. The Verti Drain is a very adaptable machine, it can take various size tynes from 4mm solids (needles) right up to inch solid or hollow cores.
I would run the needles over the greens on Monday, followed by the groomers & dust, all before the monthly medal on Saturday, the golfers were none the wiser
but hey, 3 months they say?