Not to rain on your parade, but from the tone of your post I assume that you are not on Council yourself. Speaking as someone on the other end of the stick (on Strata Council for many many years), allow me to chime in here.

I don't know how many living units are in your building, but if you are allowed to store extra stuff like you were, everyone should be. So multiply your personal clutter in the hall times however many. Gets out of hand real quick. Trust me. Next thing you know the storage area looks like the set of "Hoarders" and the Fire Inspector starts handing out edicts.

Also, some buildings have the assigned unit numbers printed right on the lockers, while some do not (for security reasons). If not, you can't assume that whoever was doing the hallway cleanout knew for sure that the stuff belonged to you; maybe they didn't even know you. Maybe they just had a hate-on for you personally.

Now I can't speak for all Stratas, but while some are staffed by power-hungry passive-aggressive types with their own little agendas, I think most are made up of people who volunteer their time and efforts to do all the little things that need doing to keep the place going. So when someone on Council takes the time and effort to put up a "Notice to Residents", frickin' take the 30 seconds to read it.

And scan the lobby/communal message boards once in a while for Strata notices. Maybe your building has a designated area for such notices. If not, suggest to Strata that they put one in.

If you feel that there was insufficient time or coverage of notices given, by all means go before Strata and voice your complaints; you have every right to do so. However keep in mind that I don't believe that Strata even needs to give any warning to clear common areas; doing so is a matter of courtesy only. They are called "Common Areas" not "Free-for-all excess storage areas".

And finally, if you want to voice your displeasure by refusing to pay your Strata fees, keep in mind that such withholding of fees is one of the few areas where Stratas can (and probably will) put a lien against your property title. Makes it less fun when you decide to sell.

By the way, you're an Owner; if you're really pissed, don't just complain - petition to run for Strata yourself! If your Strata is really that totalitarian, there will be others who feel like you and will be happy to vote you in at the next AGM. If not, well - maybe that's something worth learning too.

tl;dr - Nice try - read my post and learn something.

Edit: Just to show I'm not just being a killjoy, FYI for future reference you probably have more options regarding things like your leaky scooter. Read your ownership documents, but you may in fact own your parking space outright (which I did in my old place) instead of as a share of common property, and unless you were gushing oil a la Exxon Valdez (lawyers call it "unreasonable"), then if you are leaking less than any other vehicle in the garage - including that huge old V8 auto parked across the way - then Council has no real recourse. Making such calm comments is definitely worth standing up in front of Council and doing.

Oh - and even if they did fine, unpaid Strata fines (not monthly fees) are something for which Council can not impose a lien against your property.