Thanks all for the replies. Just an update:
- Wound is fine. No signs of anything significant
- Like I said, the LP officer came and took a report, pictures etc. Shortly after he left my room, room service came by with a fruit/cheese/cracker plate along with a handwritten apology card from the LP officer.
- Marriott Intl on Twitter followed up with me today to make sure the foot is OK and to see if there's anything else I need.
I think I'll let the issue be for now. No sense in being a dick and demanding compensation -- I'd rather save the demands for when something is really due to me.