Interested in this post because something similar happened to me. Finished last league with 166 avg and last Tuesday I shot 214, 216, 190. We tied with the other team, guys with 210+ avgs, mainly because of my handicap. Obviously they were not that happy.
I think real honest people shouldn't have problems with this. I didn't shoot 166 on purpose, problems with execution, my conscience is fine because I know I'll do me best to try this not to happen again. If somebody makes bad comments, I'll ignore them and put these guys on my black list.
-The Extremist bowler