Tim Kerr 1989 playoffs -- what happened?

[The Panther]

What happened to Tim Kerr in the 1989 playoffs? Here's his weird stats that spring:

Round 1 vs. Washington
-- 10 points in 6 games (actually 5 games, as he was tossed six minutes into game six)
-- Scoring rank: 1st among both clubs

Round 2 vs. Pittsburgh
-- 15 points in 7 games
-- Scoring rank: 1st among both clubs (Kerr out-goaled and out-pointed Mario Lemieux!)

(At this point, Kerr was leading the entire playoff in scoring, 3 points ahead of Gretzky)

Round 3 vs. Montreal
-- 0 points in 6 games
-- Scoring rank: Tied for 26th among both clubs

_____________________

Did something happen in game seven of the Pittsburgh series to injure him? He was still playing in the third period, as he picked up an assist then.

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[The Panther]

Okay, never mind, I found the answer:

 

[The Panther]

By the way, it's crazy how quickly Kerr declined as a soft-touch goal scorer. In the regular season, he failed to score on any of his final 58 shots on goal in 1991 and 1992. I know he had all sorts of injury issues (mainly shoulder) and off-ice tragedy, but was the broken thumb the main reason for this sudden loss of touch?