I wouldn’t wait for it to happen again. The “peaceful enjoyment’ by-law covers everything from wooden floors to karaoke machines and powers tools as well. It might be worth contacting your EC to have it minuted that the use of power tools at evening and weekends is in contravention of this rule. If need be, suggest that they draft a new by-law for your next AGM that governs the hours when noisy work can be done. It tends to happen that all buildings reach an age when renovations are required – and once one person starts it spreads like a virus.
By the way, your council’s restrictions are laughable – you must be living in a builder’s paradise. But by-laws for your complex supersede local council by-laws in issues like this – it’s not “instead of” it’s “as well as”.