That's a very strange one Chazz - the only thing I can add is:
Despite the stronger overall XI stats (pretty much down to your defence being a lot stronger) West Town Utd actually had the higher average stats in the midfield [740 vs 715] area, with no difference between the teams in the striking [694 vs 694] department - perhaps their attacking midifelders were the difference on the day? The only other thing worth mentioning was as they opted for longball so do the heading stats come into play? The average heading stats of West Town Utd [87] were slightly higher than yours [84].
Despite the above I can't see how this would be anywhere near enough to contribute to West Town Utd winning 2-0 with only 6% TA! With your 65% TA to come away with a loss is extremely harsh.