Thanks for all the comments. Think it was the fact it was my first leg workout for a while and lack of nutrition and sleep after. (Was up until 6 a.m. in MOS the same day)

Did legs on Saturday again and feel far better this time. Legs still sore as fuck, but not that crippling pulled muscle sort of feeling.

It's not just the fact it hurts. That I can deal with. It's just really annoying walking around like a spaz for days on end and physically not been able to do stuff.

Gonna get some L Glutamine. Cheers for the tip.