Had a strange one yesterday …clutch wouldn’t disengage or so it seemed and couldn’t get in any gear … rolled slowly and nudged it into 1st,drove away and all was well again…
Was as if I was trying to get a non synchromeshed gear and the cogs were blocking the selection …
Tried all the gears and none would select …
All seems fine now …
That sounds weird??
I reckon its down to you not having your ECU remapped to take full advantage of all your mods! 
^^^ lol 
^^^
It was as though the seal in either the slave or master cylinder had flipped round ??
Bit like some BL cylinders used to …
i had the same problem after a trackday at Anglesey on the way back home sat in traffic.I was told gearbox had got hot after running on track then sat getting hotter,when left to coolit was ok again.Now changed to a better oil no probs since