glad no real harm was done mate!
I had a similar episode with the driveshaft on my st182- one morning it felt a little "clunkier" and "grindier" (don't look those up dubs) than usual, but not bad so carried on to work. on the way home it was the same but certainly no worse, but carried on gingerly none the less- until some idiot cut me up in a CRX and tried to leave me behind, so I proved he couldn't. then- as I pulled on my driveway, a massive clank over the hump over the pavement and the car made a grinding noise terribly as I came to a stop.
broken driveshaft
lucky, I should coco. the only thing for those last 2 yards holding the wheel / hub on was the brake caliper / carrier.
also don't beat yourself up about the bolt coming loose, it happens. my mechanic bollocked me a few years back for not fully torqueing both pinch bolts on my yaris after changing the shocks- but I had, with my trusty wrench.
as a few have said on here its always best to check after a good few miles bedding in period, but lets face it, we don't all do it every time!
glad all is ok now mate and its only cost you a wheel balance and change of underpants